I bought my A-5 used on ebay for $135... My first Apex for $25 also used on ebay.
My paint for my last TWO games was seconds (that just happened to be high end Traxxus XPS) which was $45 for a case. (I used 1,100 balls for both games, still have the rest for my next game or two).
And fills for my Co2 run $3.99... but, they give you a free fill after every 4 you get filled.
So I spend less than $20 each time I play at my private field in my backyard. So paintball is definitely a "cheap" hobby for me...