You have to look at this fairly logistically and in a bigger picture like Damien did and look at what's a fair quality control number for the product into a whole. In a product where you might be QCing 2-3% of the entire product, that means you're only seeing 2 or 3 of those Patch foursomes total, and they won't necessarily be this one. Same with the dual patches, same with the trios and so on. There are 2,805 different cards in SP Game Used, not accounting for print runs. Even if they were to look at one copy of each card, short prints or not, it would take one FTE approximately 6 weeks assuming each card was allotted about 5 minutes. Realistically, they probably have a couple people per product around to do this, but still, it's a lengthy process given the amount of cards in the product, but the point still stands. Assuming a print run of 3000 12 boxes cases, that's over 645,000 individual cards that are packed out for this product alone, which is one of their more limited print runs. Even 3% of that (a hypothetical number) is almost 20,000 cards. You have to account for errors somewhere along the line. No process short of 100% quality control (which isn't feasible) will be perfect.
