having read all the comments/responses here, I would like to provide my constructive suggestions to resolve the situation. Taking as granted that those sets can not be reproduced again, I can see only 2 viable options here.

1) return the product and get full compensation (in the exact amount paid in BTC). Ballet will also cover all returning shipping fees (+ initial dispatching shipping fees?), for the items to get returned back to Minerjones (both domestic and international shipping fees, depending on the original destination that MJ did the reshipping of the packages).

2) Customers that would prefer to keep their "defective" products, will receive an additional voucher of an $xxx amount (with 1 year validity time), that can be used any time in the future to acquire current and future items from the ballet site. Customers could keep the limited edition items (with all the possible defects) and get partial compensation (depending on the voucher amount) for their defective products. For example, someone could keep their limited edition silver card (with defects) and use the voucher to purchase another silver card (non limited edition with a random number). Alternatively, they could get any other products of their interest from the site. (each person have different needs, hence someone might get more personal value acquiring the "A" item rather than the "B" item from the site.)

just my 2 satoshis...