5 games or 5 days of play? Wow if the former$25 on a new bag of .48s lasts me like 5 games, and my green gas canister has lasted me atleast 10. I just use my spring VSR and mk23. My one tube of cera-grease is going to last me atleast 10 games as well.
Tickets at my field are $30 (expensive, but oh well), and bbs cost like $5 a day. I'd say that's pretty reasonable, especially considering .48 cost like 3x normal bbs.
Just did the math on my use and 1000 rounds should last me about 5 days of 10 games a day or about 2 months.