I ordered 4 books for $33.98. I got invoice of $33.98. But when I saw my cfredit card, I was charged for charged $33.97 and $19.95 (which I never authorized). I called them, but no help and they never returned me that money.DiscountBookSale.com is a SCAM. The customer care lady at Discount Books Sale was also rude. DO NOT buy anything from any of these so called businesses. read full review »