That's way too much. If you want a stop gap bike you should be spending no more that $6K-$7K MAX IMHO.
FWIW I sold the FZ-09 in absolutely mint condition for about $5.5K. $10K on that KTM is ridiculous.
If I get any 600 cc bike it won't really be a stop gap - it will be what I ride for at least this year and next. Hopefully by 2023 Tridents will be thick on the ground.
Yeah - this one is overpriced - but what would be a palatable number on this? Used 2017 2018 690s are on Kijiji for not a lot less - $7500 to $8500. I know that older ones can be had for less, but I have more comfort buying the newest lowest mileage used offering I can find as opposed to the cheapest / best value. Everyone keeps saying buy used, but the plum choices on the used market are not a whole lot less than new.
Brand new Duke 390 FTW.
New Duke 390 remains a safe and affordable purchase option.