There is no danger of RTs ending up in landfills or recycling centers. If they didn't sell all of their remaining inventory of RT units by the end of this weekend, they certainly will within the next 3 weeks. This is EXACTLY what they did back on 2007 when they offered the 1st gen Zune (30) as Black Friday doorbusters. They had massive quantities of Zune 30 units available and so they cleared out inventory to (A) recoup some cost, (B) get Zunes into consumers' hands to create a user base, (C) generate buzz for the holiday shopping season as a way of kick-starting interest in the 2nd gen Zune device (Zune 80). It worked then.
I believe that it is going to work again. Everyone that I know had not heard of the RT until I bought one 2 months ago on that $199 ebay bundle deal. After that they were mildly interested. After I told them that I expect the RT to be a doorbuster on Black Friday for perhaps even less, they became more interested. After a handful of acquaintances and friends bought them this weekend, THEIR friends and family are suddenly very hot to buy one. They're asking their friends who are in turn asking me to help them track some down.
Those who want one and don't want to risk going to Christmas morning without one are actually considering a Surface 2. It's 2007 all over again. There's definitely buzz in my sphere of influence around the RT/2. It's gonna be fun.