While you can find many, many boxes of cards at a dime a piece at The National and possibly even more booths with boxes marked "90% off of Beckett" it is inevitable that this will be the result on your wallet of visiting the largest sports card show in the world.
Here's the most expensive single card I picked up at the show. What this card lacks in being way off center it gains in having four very nice corners for a 1971 card. Those black corners get scuffed up very easily if you aren't careful. In the end, I probably overpaid a bit over what I could comparably find somewhere on the internet but I was anxious to cross this off my '71 Topps needs list and finally have it in hand.