Read some reviews on the plasma, do a little bit of research, then buy. I bought my 50" plasma last year for $3200.00 - New. Yes, it's a Sampo and not the best picture of all plasmas, but it looks great with HDTV, the 50" size is really nice, and it has been working flawlessly.
Most of all, I still haven't seen 50" plasmas come close to the price I paid. That's the killer deal. If you are happy with the pricing, and the reviews look good, and you have the cash, then get it! Don't worry about the end of this year, that's 6 months with no plasma before others are there.
I've had mine for about 12 months now and I am totally thrilled with my purchase still. I recommend the buying decision, but know nothing of that specific plasma.