Question on Garmin DC50.

Just bought the 320/dc50 bundle today at cabelas. It was still on sale for $399, instead of $599, where as the 320/t5 is $599. I was thinking of buying the 320/50 combo last week, but wasn't sure and when I saw it still on sale I went ahead and got it. I wish I would have seen this thread sooner, I wouldn't have bought it and sold off my last 2 dc30s and just go back to the way I did it before getting a system, but I would need to get a hearing aid first lol. Why do companies pull this kind of crap, make upgraded systems, overlapping them just enough for the previous system to be out of date before the price of the newest system is comparable/reasonable to the previous system? The crap is over priced to begin with and they don't drop the prices much on the outdated systems after the newest stuff comes out. Oh wait, I think I know the answer to my question, freaking monetary greed.