We just bought our 2016 XLR 395AMP in May. We ordered it from a wholesale dealer not far from the XLR factory, so they don't tack on any delivery or PDI fees. Our unit came in with an MSRP of a little over $99k and we paid $61,500 (plus tax of course). So we got roughly 38% off our ordered unit.
Our unit was originally supposed to have a $95,500 MSRP, but the factory accidentally built it with the extreme weather package that I didn't want. The dealer held true to our original deal and didn't charge us any more for the mistake. I'm sure they probably worked something out with XLR and didn't have to eat the extra cost though.