Oh yeah if you guys want to see a taste of the price go the the tern press website:
http://ternbicycles.com/news/2011/08...best-bike-gear
scroll down to the tern bike from the outside magazine article and you can see their 2nd top of the line x20 bike with the SRAM red drivetrain $3500! woooo these things are going to be high end. Oh yeah they are heavier than the dahons because the hinges are supposed to last longer (replaceable bushing) and much stiffer. So I think they are making their bikes to be more of a long term investment.
and with the price and quality of these bikes I don't think we can be comparing them with dahons but more with bike friday's and bromptons.
I myself am eyeing the verge duo and the s11. I need ride quality over a super fold since I don't multi mode commute but would like to store it under my desk at work.