--- a/src/ai/default/default.cpp	Fri Mar 23 12:03:41 2007 +0000
+++ b/src/ai/default/default.cpp	Sat Mar 31 12:34:36 2007 +0000
@@ -99,7 +99,7 @@
 				v->type == VEH_SHIP) {
 			/* replace engine? */
 			if (v->type == VEH_TRAIN && v->engine_type < 3 &&
-					(_price.build_railvehicle >> 3) < p->player_money) {
+					(_eco->GetPrice(CEconomy::BUILD_RAILVEHICLE) >> 3) < p->player_money) {
 				p->ai.state = AIS_VEH_CHECK_REPLACE_VEHICLE;
 				p->ai.cur_veh = v;
 				return;
@@ -107,8 +107,8 @@
 
 			/* not profitable? */
 			if (v->age >= 730 &&
-					v->profit_last_year < _price.station_value * 5 &&
-					v->profit_this_year < _price.station_value * 5) {
+					v->profit_last_year < _eco->GetPrice(CEconomy::STATION_VALUE) * 5 &&
+					v->profit_this_year < _eco->GetPrice(CEconomy::STATION_VALUE) * 5) {
 				p->ai.state_counter = 0;
 				p->ai.state = AIS_SELL_VEHICLE;
 				p->ai.cur_veh = v;
@@ -226,7 +226,7 @@
 
 static int32 AiGetBasePrice(const Player* p)
 {
-	int32 base = _price.station_value;
+	int32 base = _eco->GetPrice(CEconomy::STATION_VALUE);
 
 	// adjust base price when more expensive vehicles are available
 	switch (p->ai.railtype_to_use) {
@@ -1628,7 +1628,7 @@
 						ret = DoCommand(c, k, 0, flag, CMD_BUILD_SIGNALS);
 					} while (--j);
 				} else {
-					ret = _price.build_signals;
+					ret = _eco->GetPrice(CEconomy::BUILD_SIGNALS);
 				}
 				if (CmdFailed(ret)) return CMD_ERROR;
 				total_cost += ret;
@@ -1638,7 +1638,7 @@
 			if (GetTileSlope(c, NULL) != SLOPE_FLAT) return CMD_ERROR;
 			ret = DoCommand(c, 0, 0, flag | DC_AUTO | DC_NO_WATER | DC_AI_BUILDING, CMD_LANDSCAPE_CLEAR);
 			if (CmdFailed(ret)) return CMD_ERROR;
-			total_cost += ret + _price.build_rail;
+			total_cost += ret + _eco->GetPrice(CEconomy::PRICE_RAIL_BUILD, c);
 
 			if (flag & DC_EXEC) {
 				DoCommand(c, railtype, p->attr&1, flag | DC_AUTO | DC_NO_WATER | DC_AI_BUILDING, CMD_BUILD_SINGLE_RAIL);