New Bubble fan here

hey guys, just signed up here so i thought i'd introduce myself. i've seen a couple people here from tc and am very interested in the art of producing fmb so i figured i'd register. i have smoked bubble multiple times, and let me say it is among my favorite highs. however, for someone who isnt a cultivator, are bubblebags worth the cost and effort? they stock the bags at my local headshop and was thinking about grabbing the 1gal 4 bag kit for 100 dollars. i wouldnt costantly be doing runs, but i come across large amounts of trim that i can buy for cheap. how much bubble would you usually get from 2 ounces of frosty trim?