We have owned our 2012 170X ERA for about a year and a half and REALLY like it. We downsized from a Class A DP'er ( had 3 of them) and never looked back. We get 20mpg or so when traveling and the ERA has been trouble free. We bought ours new and paid just under $80K for it so I assume you'll need to increase your budget to buy a new one.
The 2010 ERA was a totally different animal than the 2012 as it was built on a 250 chassis instead of the current 350 chassis. Also, the 2012 model has a totally new interior design/layout that is a much higher quality than the earlier model. If you could find a used 2012 it would be a lot closer to your budget than a new unit, however, that may be difficult as the ERA is becoming a very popular class B. Good luck, Ron