I was at Radio Shack yesterday, trying to buy a breadboard. (No of course they didn't have it, why would my store have it in stock?)

Anyway, I was searching their bins and I saw a Parallax RFID READER WITH TAGS part number 276-0032, or this part: http://www.parallax.com/Store/Sensor...%2cProductName

It didn't have a price marked, so I had the lady scan it, and she told me it was $19.97. It's on my receipt as the correct part number, and correct product description. That's half off of Parallax's price, so if you are interested in RFID, you might want to check it out at Radio Shack.