My shop could use a few more vault vouchers if you wanna stock them for free. Just drop them off on /smp2 /V +tower put them in the chest surrounded by sandstone.
I would not have any sell signs, maybe just maybe one. Some items I will supply and some items you will supply.
Instead May I suggest hosting Events and Drop parties and giving those items away as awards? That way players are not profiting. Or you can post a thread and donate the items towards players builds (Within limits, like for example have to have a current build in progress and all). ~Finch
My tip: start by looking for shops which have sell signs (aka: you can sell items to them). A good place to start would be /v +bulk on SMP8. Then go out mining and provide 'm with the materials you gained. I think that will be much more beneficial for everyone. Both yourself and the shop you're selling to. Just my 2 cents though