In my area, most used ones are15K or more unless it has a bunch of miles or is 8 to 10 years old. I have see some listed recently for close to 20K. I commented to my wife the other day that used side X sides seem to cost more than used Jeep Wranglers. Crazy.
I'm in west central Pennsylvania. There had been only one station near me with non-ethanol gas, a Kwik Fill. Recently, Sheetz has started selling non-ethanol gas and most of those stations near me seem to have it. With so many Sheetz stores in Pennsylvania, non-ethanol should be easy to find now.
I don't change the filter on mine often either. That's the reason I would prefer to use an Ultra because I figured the synthetic media would hold up better than cellulose. I just wasn't sure if there was a reason Fram didn't list the Ultra for that application.
Please read the article at this link before deciding on the Soresto collar
https://www.usatoday.com/story/news/investigations/2021/03/02/seresto-dog-cat-collars-found-harm-pets-humans-epa-records-show/4574753001/?fbclid=IwAR35AXf5isJiNr3owu5Jc1Eqfux-xWOqu80fCGVpNsZkSHoEIzelaIFdJl4
Autoanything.com has sale on Husky liners right now. The WeatherBeaters are $117.59 for front and rear liners or $78.39 if you just want the rear. I have them in my F150 and like them.