yeah ive been playing warhammer for like 4 years now, i mainly play 40k but i have a fantasy orc army on the side. in 40k my main army is Tyranids, and i have a few side armys. its a really addicting game and its really not THAT expensive, depends how addicted you get. You can probably build a full scale army for like $300-400 but it would have like everything youd want. switchable squads depending on who youre fighting, etc.
but yeah its a great game if you have a game shop nearby with people to play with or you get your friends into it