Do you want a new TV? If so, you can always find a way to justify getting one.
You should be able to sell that lamp you just bought and recoup most of the cost if you do so.
Also, not to push them, because I actually hate the place, but if you are looking for a good deal, you might also want to consider an open box deal from Best Buy. We got our TV there for close 50% off retail. It was such a good deal we went back a few months later when we decided to replace the TV in the bedroom.
However, if you do go with their house brands, Insignia or Dynex, just be aware that they aren't quite as good as other name brands. Unless you are a videophile, you probably won't care though.
Go Speed Racer Go (The 60's cartoon, not the movie)