Circuit City has been changing their online price numerous times in the last month or so. This whole time (or at least as much as I have checked) Best Buy has remained at $299 for the HD-A2.
About a month ago Circuit City's site had it listed for $272.88 while Best Buy was at $299. Best Buy price matched it, and I had an $80 gift card laying around, so I got it for $192.
Last weekend, a co-worker noticed on Friday night Circuit City had it listed for $238.99 online, by Saturday it was back to $299. We checked on Tuesday and it was $239.99. Got the price match and walked out the door with it (wanted to get it at Best Buy for Reward Zone points -- same reason as me).
All I can suggest is keep checking their site every day or so, in case they drop the price again, then pick it up. Or.. pick it up for $299 and within 30 days if they drop the price online, go in the store and get a credit (I can't remember if their policy would be 14 days on the player or not, though).
I'm loving mine, not only for HD DVD, but for the upconverting as well. I don't know what magic it uses to upconvert, since the original DVD is only so good of a resolution and quality, but it is DEFINITELY an improvement. I've always been very skeptical of upconverting DVD players (tried out numerous units on my setup) and could not really notice a difference to my progressive scan DVD player. So, even after reading reviews and seeing people impressed with the upconverting, I was still skeptical.. hooked it up and was amazed. Even the wife thought one standard DVD (Night At The Museum) was an HD DVD. :up Of course Pixar movies looked great as well.