Unfortunately, that's just the way things go today. Something similar happened to me: I called Benchmark a few weeks before the DAC2 was announced, and talked to the sales guy there about asynchronous vs. isosynchronous. He spent a long time explaining to me why asynchronous was a bad solution, why the DAC1 takes a much better approach, etc. I then bought the DAC1 from them (at full price, of course), and a couple weeks later . . . an asynchronous DAC2 is announced. When I called Benchmark and asked if I could trade my DAC1 in for a DAC2, his answer was: sorry, go to audiogon and take a $500 hit, and then buy the new and improved model at full price.
I still like the DAC1, but it left such a sour taste in my mouth that I will never own another Benchmark product (I guess expected more from a company like that). Nonetheless, I expect that's just the way things are done today everywhere.