--- a/src/town_cmd.cpp	Fri Apr 04 16:32:27 2008 +0000
+++ b/src/town_cmd.cpp	Fri Apr 04 16:52:29 2008 +0000
@@ -758,7 +758,7 @@
 	TILE_ASSERT(tile);
 
 	CommandCost r = DoCommand(tile, edges, dir, DC_AUTO | DC_NO_WATER, CMD_TERRAFORM_LAND);
-	if (CmdFailed(r) || r.GetCost() >= 126 * 16) return false;
+	if (CmdFailed(r) || r.GetCost() >= (_price.terraform + 2) * 8) return false;
 	DoCommand(tile, edges, dir, DC_AUTO | DC_NO_WATER | DC_EXEC, CMD_TERRAFORM_LAND);
 	return true;
 }