diff --git a/libethcore/Common.h b/libethcore/Common.h
index 072d78cc3..883a14e9b 100644
--- a/libethcore/Common.h
+++ b/libethcore/Common.h
@@ -80,6 +80,7 @@ template <> inline u256 exp10<0>()
 static const u256 ether = exp10<18>();
 static const u256 finney = exp10<15>();
 static const u256 szabo = exp10<12>();
+static const u256 shannon = exp10<9>();
 static const u256 wei = exp10<0>();
 
 using Nonce = h64;
diff --git a/libethcore/Params.cpp b/libethcore/Params.cpp
index fbf0f6d9e..8db3833ca 100644
--- a/libethcore/Params.cpp
+++ b/libethcore/Params.cpp
@@ -61,7 +61,7 @@ Network resetNetwork(Network _n)
 		c_minGasLimit = 5000;
 		break;
 	}
-	c_gasFloorTarget = c_network == Network::Frontier ? 5000 : 3141592;
+	c_gasFloorTarget = 3141592;
 	c_gasLimitBoundDivisor = 1024;
 	c_minimumDifficulty = 131072;
 	c_difficultyBoundDivisor = 2048;
diff --git a/libethereum/GasPricer.h b/libethereum/GasPricer.h
index f0fc6b520..c45fb8f67 100644
--- a/libethereum/GasPricer.h
+++ b/libethereum/GasPricer.h
@@ -40,6 +40,8 @@ enum class TransactionPriority
 	Highest = 8
 };
 
+static const u256 c_defaultGasPrice = 50 * shannon;
+
 class GasPricer
 {
 public:
@@ -66,8 +68,8 @@ public:
 	u256 bid(TransactionPriority = TransactionPriority::Medium) const override { return m_bid; }
 
 private:
-	u256 m_ask = 10 * szabo;
-	u256 m_bid = 10 * szabo;
+	u256 m_ask = c_defaultGasPrice;
+	u256 m_bid = c_defaultGasPrice;
 };
 
 }
diff --git a/libethereum/Interface.h b/libethereum/Interface.h
index b21ebfdb2..c33236962 100644
--- a/libethereum/Interface.h
+++ b/libethereum/Interface.h
@@ -26,6 +26,7 @@
 #include <libdevcore/Guards.h>
 #include <libdevcrypto/Common.h>
 #include <libethcore/Ethash.h>
+#include <libethereum/GasPricer.h>
 #include "LogFilter.h"
 #include "Transaction.h"
 #include "AccountDiff.h"
@@ -70,25 +71,25 @@ public:
 	virtual std::pair<h256, Address> submitTransaction(TransactionSkeleton const& _t, Secret const& _secret) = 0;
 
 	/// Submits the given message-call transaction.
-	void submitTransaction(Secret const& _secret, u256 const& _value, Address const& _dest, bytes const& _data = bytes(), u256 const& _gas = 10000, u256 const& _gasPrice = 10 * szabo, u256 const& _nonce = UndefinedU256);
+	void submitTransaction(Secret const& _secret, u256 const& _value, Address const& _dest, bytes const& _data = bytes(), u256 const& _gas = 10000, u256 const& _gasPrice = c_defaultGasPrice, u256 const& _nonce = UndefinedU256);
 
 	/// Submits a new contract-creation transaction.
 	/// @returns the new contract's address (assuming it all goes through).
-	Address submitTransaction(Secret const& _secret, u256 const& _endowment, bytes const& _init, u256 const& _gas = 10000, u256 const& _gasPrice = 10 * szabo, u256 const& _nonce = UndefinedU256);
+	Address submitTransaction(Secret const& _secret, u256 const& _endowment, bytes const& _init, u256 const& _gas = 10000, u256 const& _gasPrice = c_defaultGasPrice, u256 const& _nonce = UndefinedU256);
 
 	/// Blocks until all pending transactions have been processed.
 	virtual void flushTransactions() = 0;
 
 	/// Makes the given call. Nothing is recorded into the state.
 	virtual ExecutionResult call(Address const& _from, u256 _value, Address _dest, bytes const& _data, u256 _gas, u256 _gasPrice, BlockNumber _blockNumber, FudgeFactor _ff = FudgeFactor::Strict) = 0;
-	ExecutionResult call(Address const& _from, u256 _value, Address _dest, bytes const& _data = bytes(), u256 _gas = 10000, u256 _gasPrice = 10 * szabo, FudgeFactor _ff = FudgeFactor::Strict) { return call(_from, _value, _dest, _data, _gas, _gasPrice, m_default, _ff); }
+	ExecutionResult call(Address const& _from, u256 _value, Address _dest, bytes const& _data = bytes(), u256 _gas = 10000, u256 _gasPrice = c_defaultGasPrice, FudgeFactor _ff = FudgeFactor::Strict) { return call(_from, _value, _dest, _data, _gas, _gasPrice, m_default, _ff); }
 	ExecutionResult call(Secret const& _secret, u256 _value, Address _dest, bytes const& _data, u256 _gas, u256 _gasPrice, BlockNumber _blockNumber, FudgeFactor _ff = FudgeFactor::Strict) { return call(toAddress(_secret), _value, _dest, _data, _gas, _gasPrice, _blockNumber, _ff); }
 	ExecutionResult call(Secret const& _secret, u256 _value, Address _dest, bytes const& _data, u256 _gas, u256 _gasPrice, FudgeFactor _ff = FudgeFactor::Strict) { return call(toAddress(_secret), _value, _dest, _data, _gas, _gasPrice, _ff); }
 
 	/// Does the given creation. Nothing is recorded into the state.
 	/// @returns the pair of the Address of the created contract together with its code.
 	virtual ExecutionResult create(Address const& _from, u256 _value, bytes const& _data, u256 _gas, u256 _gasPrice, BlockNumber _blockNumber, FudgeFactor _ff = FudgeFactor::Strict) = 0;
-	ExecutionResult create(Address const& _from, u256 _value, bytes const& _data = bytes(), u256 _gas = 10000, u256 _gasPrice = 10 * szabo, FudgeFactor _ff = FudgeFactor::Strict) { return create(_from, _value, _data, _gas, _gasPrice, m_default, _ff); }
+	ExecutionResult create(Address const& _from, u256 _value, bytes const& _data = bytes(), u256 _gas = 10000, u256 _gasPrice = c_defaultGasPrice, FudgeFactor _ff = FudgeFactor::Strict) { return create(_from, _value, _data, _gas, _gasPrice, m_default, _ff); }
 	ExecutionResult create(Secret const& _secret, u256 _value, bytes const& _data, u256 _gas, u256 _gasPrice, BlockNumber _blockNumber, FudgeFactor _ff = FudgeFactor::Strict) { return create(toAddress(_secret), _value, _data, _gas, _gasPrice, _blockNumber, _ff); }
 	ExecutionResult create(Secret const& _secret, u256 _value, bytes const& _data, u256 _gas, u256 _gasPrice, FudgeFactor _ff = FudgeFactor::Strict) { return create(toAddress(_secret), _value, _data, _gas, _gasPrice, _ff); }
 
diff --git a/libethereumx/Ethereum.h b/libethereumx/Ethereum.h
index 1e24b396c..73392ea88 100644
--- a/libethereumx/Ethereum.h
+++ b/libethereumx/Ethereum.h
@@ -62,11 +62,11 @@ public:
 	~Ethereum();
 
 	/// Submits the given message-call transaction.
-	void submitTransaction(Secret const& _secret, u256 _value, Address _dest, bytes const& _data = bytes(), u256 _gas = 10000, u256 _gasPrice = 10 * szabo);
+	void submitTransaction(Secret const& _secret, u256 _value, Address _dest, bytes const& _data = bytes(), u256 _gas = 10000, u256 _gasPrice = c_defaultGasPrice);
 
 	/// Submits a new contract-creation transaction.
 	/// @returns the new contract's address (assuming it all goes through).
-	Address submitTransaction(Secret const& _secret, u256 _endowment, bytes const& _init, u256 _gas = 10000, u256 _gasPrice = 10 * szabo);
+	Address submitTransaction(Secret const& _secret, u256 _endowment, bytes const& _init, u256 _gas = 10000, u256 _gasPrice = c_defaultGasPrice);
 
 	/// Injects the RLP-encoded transaction given by the _rlp into the transaction queue directly.
 	void inject(bytesConstRef _rlp);
@@ -75,7 +75,7 @@ public:
 	void flushTransactions();
 
 	/// Makes the given call. Nothing is recorded into the state.
-	bytes call(Address const& _from, u256 _value, Address _dest, bytes const& _data = bytes(), u256 _gas = 10000, u256 _gasPrice = 10 * szabo);
+	bytes call(Address const& _from, u256 _value, Address _dest, bytes const& _data = bytes(), u256 _gas = 10000, u256 _gasPrice = c_defaultGasPrice);
 
 	// Informational stuff
 
diff --git a/test/libethereum/gaspricer.cpp b/test/libethereum/gaspricer.cpp
index b4cbed8cb..820b623e5 100644
--- a/test/libethereum/gaspricer.cpp
+++ b/test/libethereum/gaspricer.cpp
@@ -54,11 +54,11 @@ BOOST_AUTO_TEST_CASE(trivialGasPricer)
 {
 	cnote << "trivialGasPricer";
 	std::shared_ptr<dev::eth::GasPricer> gp(new TrivialGasPricer);
-	BOOST_CHECK_EQUAL(gp->ask(State()), 10 * szabo);
-	BOOST_CHECK_EQUAL(gp->bid(), 10 * szabo);
+	BOOST_CHECK_EQUAL(gp->ask(State()), c_defaultGasPrice);
+	BOOST_CHECK_EQUAL(gp->bid(), c_defaultGasPrice);
 	gp->update(CanonBlockChain<Ethash>(TransientDirectory().path(), WithExisting::Kill));
-	BOOST_CHECK_EQUAL(gp->ask(State()), 10 * szabo);
-	BOOST_CHECK_EQUAL(gp->bid(), 10 * szabo);
+	BOOST_CHECK_EQUAL(gp->ask(State()), c_defaultGasPrice);
+	BOOST_CHECK_EQUAL(gp->bid(), c_defaultGasPrice);
 }
 
 BOOST_AUTO_TEST_CASE(basicGasPricerNoUpdate)
diff --git a/test/libethereum/transaction.cpp b/test/libethereum/transaction.cpp
index b620fc5ec..f6ed3ffa3 100644
--- a/test/libethereum/transaction.cpp
+++ b/test/libethereum/transaction.cpp
@@ -17,7 +17,7 @@
 /** @file transaction.cpp
  * @author Dmitrii Khokhlov <winsvega@mail.ru>
  * @date 2015
- * Transaaction test functions.
+ * Transaction test functions.
  */
 
 #include "../TestHelper.h"