If you are not 100% happy, I would exchange it. If you cannot exchange it because it is discontinued, try to determine if you can live with the imperfections or live without the bag. It sounds like to RA was more of an impulse buy (not on your Wish List). Picture yourself down the road 2-3 years. Might you be more disappointed without the bag or with the imperfection?
Sometimes slight imperfections (even with brand-new-from-the-boutique LVs) make me think I will be more likely to use the bag b/c it already has a slight imperfection. For instance, my husband just bought me a DA Speedy 25, and I did not notice until after I got home that there is a scratch on the handle. Well, I probably will scratch the handle myself over time, so I think I will keep the bag that I have and be a little less afraid to use it.
However, if the dents bother you now, additional dents or potential color transfers on RA might really bother you later.
Sorry -- I am no help at all with this! I just gave you both sides that you already know! Hopefully someone with experience with Vernis dents will chime in. I think I have read that it is difficult to "undent" vernis once it has dented in. Others have said they stuff the bag when it is not in use to fix or to avoid dents. I think I read about vernis dents in the BB clubhouse.
Good luck with your decision! I had to make the same decision myself about the Speedy 25!
Keep us posted!