For what it's worth, we brought ours in '09 new and have just traded it for our expanda for about what we paid new for it (about $500 less)
They are still holding their value although I'm led to believe that a good many "1st timers" are now going Expanda instead of C/T.
When it's all said and done, a good quality 2 year old C/T for $21,000 verses an Expanda at $31,000 is a lot of extra money for a young family.