Hey guys, I have been seriously thinking about changing the speakers in my 18 watt Blockhead. It came stock with two 12" Celestion alnico blues, and although it sounds great the way it is with the blues, I think I may be better off with some greenbacks or creambacks with my playing style. The speakers are well broke in and sound great with no issues. Anyone know approximately what a pair of these would go for in the real world? Much appreciated.