My wife and I bought an Avenger 27 RLS two months ago and could not be happier. We love the leather furniture and the layout of the trailer. We have been camping twice already with no issues at all. As another reader said - people that have had problems are more likely to post than those that have had no issues.
As far as your dealer - we were approved in 20 minutes - had exact interest rate (in the 4 something range) and exact amount of monthly payment. We were putting $5k down and have excellent credit so that may have helped.
Just to let you know dealers will really come down on rv prices. The so called MSRP of our unit was $32k or more. I offered 20,500 out the door (all taxes and other fees included) plus a weight distribution hitch included. Iwound up setteling on $21 out the door with everything including the hitch package.
If your dealer doesn't treat you right just look for another Prime Time dealer. Look on line and you can even make offers on line for the model you want.
Once you deal goes through - go on youtube and learn everything about RVing. Just do some searchs for things like towing tips, tips on things you will need etc and you will really learn.
On your first trip you will learn that everyone at the rv park is more than willing to help you learn anything and everything. I didn't even get mine parked before a neighbor came over and helped me park just right and set everything up.
To sum it up - don't worry - you will love the PT avenger. I highly recommend it.