I'm still on the fence about sending mine in... It's an EXPS2-0 that I bought from a member here- manufactured in 2015, so I only have the extreme temp loss of zero issue... I paid significantly less than MSRP...
I traded a handgun for my XPS and sent it in. Got $514 back. Similar build of 2015. Knowing the information at hand, I probably wouldn't have accepted the trade back then. That's how I looked at it.