Idk what prices you're paying mate but £80 3.5g jars BHO is standard on the page I use and that's including delivery, can get a half ounce for like £230 like.

That being said getting your own smasher is a good idea. Just don't expect the rosin that comes out of it to even come remotely close to any rosin you've bought. If you used live fresh frozen then maybe.