i got the 1lb for $7 at a local joint. stuff works great, but i found myself using more than i thought i would and having to do multiple washes/rinses. either way i love the product. sure beats soaking and waiting. it took me all of 20 mins to clean my mobius straight tube (no labels) to a sparkling crystal clear. i still followed up by a really quick ISO shake and then rinsed the hell out of it. as far as i can tell i will never use anything else from here on out. really happy i saw this thread. only negative is that it can destroy any labeling your glass may have, but i think you could probably mask them off somehow and not worry about it.