CowboysHOF - First, welcome to the Shack.
The policy written on the back of their receipt is pretty strict (the store was completely within their right to refuse my return/exchange, oops). I think they have tightened up their policy lately because a few years ago I returned some items to Radio Shack and they had no problem with how long ago the items were purchased. That's why I thought I could return the booster late with no receipt.
The cashier wasn't checking if the item was current he was trying to look up my sale. He couldn't find it so no go. So at this RS no receipt, no return. Here's the link to the item in question:
In-Line Amp. So they still carry it.
Despite my complaints, I am eternally grateful for the Shack's SPL meter. It has served me for years without fail and led me to REW and this forum. I'll never return that gem.