Every time I've shopped at a Hobby Lobby, I've gotten a weird feeling that there's something else shady going on. They don't use barcodes to price any of the goods. Everything has a sticker on it, and the cashier types up everything by hand. Your receipt ends up just being a list of dollar amounts and a total, nothing identifying your purchases in any way.
I just assumed that they're doing this so they can falsify audits. Similar to how they purchase land and donate it, claiming a bigger tax write-off, I assume they're doing the same with their merchandise. How could you audit it if there's no real stock tracking system?