I stopped by a few Gamestops in Michigan before new years and have seen firsthand several PS3s that, as the employee stated, had been sitting there for at least 5 days. Not only that, but more systems were returning to the store because they kept breaking.
Want a more credible source?
Be my guest.
I just took the first result of a quick google search, but there's plenty of other sources out there.
Even if they do cost more, the important thing is you (theoretically) wouldn't need a new piece of hardware to read them if you already own an HDDVD player.
Also, lolz at burn times. Obviously you are not looking at the HD war the same way 95% of everyone else is.