I just sold my 2015 RSV4 four days ago and I already miss it! The sound from that V4 is intoxicating and the bike itself was super reliable while I had it. That said, I sold mine in four days and had several serious buyers. You're doing something wrong if you've had it listed since March. Barf is great but you should have it up on Craigslist and Facebook Marketplace too. Lastly, the picture you posted is terrible and it's not going to give anyone a boner for an Italian exotic superbike. If you can't do it, get somebody to take some proper pics just before sunset, with good light and better angles of the RSV4. It's a gorgeous motorcycle but you need to get people excited about having that Aprilia in their garage and the pic you posted ain't gonna do it. Good luck with the sale, I'm sure you'll miss it just like I do mine...