Shipping is always a huge problem for collectors. It would be a great thing if we could have buy/sell/trade posts able to be posted by location. So often I see an amazing sign, kiosk, statue, or cabinet that I want but cannot reasonably ship it from the US or Canada without breaking the bank. I'm not sure how it can be implemented, but just my 2 cents. It would also be a great way to meet people on this side of "the pond".