I was able to get a three card lot off eBay this week for a good deal. It was listed as a BIN for $12 with $3 shipping or Best Offer. I offered $7, so the total with shipping was $10 and the seller accepted.
Here are the three cards I got. All are numbered plain jersey swatches of my favorite D-Back Paul Goldschmidt.
If an auction has a Best Offer option, do you always use it before buying? What's your best Best Offer story and your worst?