I'm still technically a "hobbyist" at this stage, still a LOT to learn (but getting that education on SMF). Anyway, to the OP: I get my material haphazardly but I'm always looking & asking. I've acquired a lot of stuff just by asking - sometimes that's all it takes. 4 towers in one "score" is a good starting point. You can tear them down in minutes, and then just start sorting. I started with (& still use) a few 5 gallon buckets and a box or two. Strip, separate, throw in the bucket / box. Wait for the next "score". After awhile, the buckets and/or boxes are full. I don't ship gaylords at a time, I'm a 50-65 lb box at a time guy right now. But I can tell you this: I'm shipping from Georgia to Ohio. My last two checks (after shipping costs) were $155 and $110. Now, that might not seem like a lot to any "pro", but for me, it's fine and I'm learning new things all the time. And once you spread the word (& always take an opportunity to spread the word), you may be surprised how much material you end up with. You will see hundreds of posts about this. It's a volume thing and you get volume by being aggressive. Ultimately, you may decided it's (
ewaste) is not for you, but always keep in mind there are other ways to profit on this stuff besides strictly srapping.
Again, I think your original issue was largely with the cost of shipping. Look again at options (buyers) on this site - you may be surprised. If I can spend $+/- $25 to get a check back for $100+, that is a fair tradeoff for me (especially at my hobby level).
Bookmarks