This is my first post, I hope I'm doing this right.
Don't give up on CompUSA just yet. I went to one store in the Minneapolis area, where the CSR told me that these had been discontinued and no stores would have any in stock despite what the website inventory stated. Undaunted, I tried another store where a very friendly CSR told me that they had one handset left. He matched the OD price based only on my word of mouth (no phone calls to prove stock or anything!). After further questioning, he did ackowledge that he had at least a couple of defective (read: returned for any reason) units in the back, waiting to be sent for destruction or wherever these things go. The first unit really did have a defective handset. The second was completely intact.
I got the impression that he would have sold these at any price just to get them out of his sight. If there is anyone in the Minneapolis area looking for a base set (software included), there is still one at the Minnetonka store.