Does anyone have a mix of evil and good characters in thier party. Or is this not a
good way to play this game.

Personally I have not tried a good / evil combination, but one of the problems I could forsee would be that if your reputation drops to far i.e. 1 or 2 then good aligned characters would leave the party, while evil NPC's would love it, and vice versa for a high reputation with evil NPC's.

I suppose that the only way to play this would be to make sure your reputation stays neutral(ish), but then you would always miss out on the cheap prices in the stores and temples.

Cheers....Mine's a beer

I have used combinations between good and evil charecter. One big reason is that theres no pure mages who have a good alligment.
Its sure isint dificult to play whit combination aligments just keep your rep 18-15 and its ok. And what comes to prizes its not problem im now at chapter 2 and i have 96000 gp and it doesent matter if some item cost 10000 or 15000.