Ever since Weeds season 6 everyone and their brother think they can make high quality hash easily in quantity, so it's really hard to find anyone to get free trim from unless it's a buddy... Also the market has a lot of sub par hashes that come from inexperienced bag users, there are plenty of ways to screw up a good batch of hash, one of the most common mistakes is to use a bladed mixer. This will yield ok but there will be more plant material and less intact trics compared to a more gentle way of mixing, like using an actual food mixer with big long paddles set on its lowest setting. The idea is to knock the heads of the trics off while leaving the rest filtered out, high speeds and sharp implements wreck the whole trics and squish or cut them to be mixed in with the green plant material.... I wont get into the whole process but suffice to say there are many tricks that can help get you better end results...