short status update:
Ivo (freemangordon) and Nikolaus cooperted today to bring up OneNAND of the PoP chip, we still see some issues in kernel, but it seems under uBoot the NAND works, so we're considering to tag the chips as "verified". Yesterday I received a note that sample chips for the "TNO" variant arrived at Moscow warehouse and I expect them to ship to us any day now.
Alas no significant progress on shop setup, I didn't find the time during last 24h. Problem is to let user decide on the amount to pay during first visit when the past payments are not linked yet so the shop can't calculate how much is missing. Idea: offer a product "1EUR voucher" of which user can buy as many as she wants bucks to pay. We'll convert those e.g. 200 vouchers into a normal payment for the Neo900 product then. Dos1 and wpwrak both are not happy with the idea, we evaluate other approaches to find the best and lest confusing method for you.

cheers
jOERG