>>10837446>bulk for MOCsFB Marketplace. If you keep updated on your local listings and jump on listings, you can get out with some savage deals. I've put myself into a feedback loop in my area where I lowball 30-50lb bins for $20, then when I contact another seller later I simply tell them the $20 rate is what I'm used to, which is completely true. By combining good comms, honesty (ironically), and promptness you can easily maintain an ecosystem of free lego by lowballing facebook moms and selling the minifigs online. If you sling in volumes of >30lbs at a time, it's trivial to simply pick out the colors you want, and hock the rest to break even and pass on your lowball rate to the rest of the community.
I post pic related every once in a while to demonstrate what $20 looks like. It's mostly 2010s era lego these days, but you can easily pick out what you want - get years worth of moc potential - and have 2/3 of the volume remaining to sell or donate.
>semi-specialized pieces that are easy to overlook This is specific to your style - an image of one of your MOCs or something inspirational would be useful here. For classic builders, the majority of your flavor is going to come from accessory pieces, vehicle parts, hinges, windows/doors, foliage, and minifigs because 99% of the aesthetic is achieved with classic bricks. I think having a variety of hinges in a large enough volume to do imaginative things with will be an upgrade.
NuLego is more difficult because the portfolio is huge. Brackets/SNOTs are important. My favorite new piece is 41682, a 2x2 bracket with a 1x2 plate in the center so you can play with the "5 plates high = 2 bricks wide" geometry easily. The series of 1xN plates with hollow studs and round ends are good for angles and adding bar holes. The 1x1 round studs with a bar hole is the same. You probably want a suite of slope pieces, including cheese slopes.
Anything else is down to your style.
