I wasn't clear, I shouldn't of said recordable DVDs, I should've said the machines that record onto DVDs.
Well, the prices for those have already fallen quite a bit. They started out being $400 or more, but nowadays, if one shops around for good deals, one can easily find excellent DVD recorders for $200 and below (well, if they don't include Tivo). In fact, between $179 and $149 seems to be a common price range (and even cheaper prices can be found if one looks for sales). And while VCR recorders can sell for as little as $50 nowadays, that's mostly because VHS is on it's way out and manufactuers are dropping prices dramatically in an effort to unload them before the bottom of the VCR market actually does fall out. I wouldn't expect to see a $50 DVD recorder anytime in the foreseeable future. Well, unless it's a piece of crap...or at the very best, very low end (meaning it's still pretty much a waste of money).
Of course, another alternative is a DVD burner for your computer. One can easily find excellent name brand (Sony, NEC, Memorex, HP, Pioneer, etc.) burners for under $100, particularly whenever rebates are involved. The cost of burners is much less because there's no need to include any of the electronics that are already present in a computer. And often times burners come with software that allows one to do far more sophisticated things with video than are possible with even the priciest DVD recorders.