I bought my bubble bags on ebay for $104 USD. But I am wondering if they are the right size, seeing as everyone like FFD and such people talk about Microns. these are sized in um. as in 220um, 190um, and so on. My fine bag is 120um. I think they should work great. I am about to harvest in the next few weeks, and I will be useing all the trimmings and the smaller pop corn buds. I am figureing somewhere around 120-150 grams. So about 10-15 grams of hash.