Number of Shots per tank??? Plz give me some help...

[Linkin]

Ok guys, I need to know how many shots each of these tanks will give me. I shoot a minimag.
45/48 ci 3000 preset...
45/48 ci 4500 preset... (and the cost)
68 ci 3000 preset...

Plz give me some help, I am tryin to decide on a nitro tank that is in my budget.

[belligerant1]

48/45 = 720
48/3k = 480
68/3k = 680

to get shots just multiply volume by 10 for a 3k and by 15 for a 4500. as far as price i don't know

[Linkin]

kool. Thanks man! that helps a lot.

Anyone know prices????