Seeed is wonderful. I’ve run over $80k of boards through them and while I have experienced one big error in a build they worked with me to fix it and in general they have wonderful service considering I’m one person working out of my apartment. Bigger shops charge way more or don’t work with me, and smaller shops don’t do as much as Seeed does.

Can you tell me some details on what exactly they do? I've designed and ordered my own PCBs from DirtyPCBs (recommended, I love them) but I've only assembled them myself (I only needed one or two pieces) and I have no idea how I would scale that to larger production.

Can you tell me what the basic steps are? Pricing information would be appreciated!

Also circuithub, and potentially tempo automation , once they'll have some more capacity.

Tempo Automation has historically been super high priced. I haven’t looked in to their prices lately tho.