Instead of telling you what car I like better or why you do or do not need FWD, I'll stick my two cents in and try and answer your actual question.
The prices for the 2016 Acura RDX are on the Internet. The prices are no secret. The 2016 RDX FWD with Tech package is $38,970 and should you want to add AcuraWatch Plus, the price is then $40,270 MSRP.
As for a 2015, there seems to be plenty of these vehicles: my Acura dealer has 87 2015 RDXs in stock. Their starting price is $39,490 for a 2015 RDX FWD with Tech. My best guess is that you should be able to knock them down $2000. So $40k is too high unless you are calculating in taxes and insurance.