It cost's about $2.50 to $3.00 a pound. So about 30 dollars the first fill but after that you should have a little left in the bottle as long as you refill the bottle about every 10 to 12 runs running a 75 shot, or at least that is been my experience.
The best one is the one you chose because I am sure everyone has a different opinion on that but I have an edelbrock but you should get one with a fuel pressure cut off switch and mine did not come with one.
The NOS kit is a good choice or your app.
BTW: I would get a dry kit.
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James Cox
nochevy@hotmail.com
1991 Mustang LX
12.565 @109.38mph 1.764 60ft