I hope this doesn't turn out like MO#4
Well the prototypes are already made hence it should get made far quicker. The demon seed in this mix is PAYPAL. Hence rushing into this blindly will reap misery and pain for all of us.
If Paypal is being difficult on anything, maybe it's due to the fact that they are dealing with "Foreign Clients" hence it may be only possible to sell the key-caps to CONUS customers only. Don't get all mad, because it may be the single sticking point when dealing with Paypal. Shipping is a huge problem that can easily be alleviated by ONLY sending every Key-cap to US citizens. That way there will be no freezing of account's due to time barriers within Paypal.
I know some orders are for foreigners but the op's running this Group Buy need to look at making this a 100% successful venture. If it means ignoring us foreigners, so be it. This is where the majority (US people) wins over us (foreigners).