Yeah screw HOA's. Being told you left your trash can out over the weekend (out of town and trash pickup is Saturday....) or remove weeds from your front planter box.... (weeds were in fact $$$ flowers/bottle brush bushes), or a neighbor said you had a company vehicle in your driveway for several hours (Direct TV, Geek Squad, AT&T..... wth....) Never once did the damn HOA ever do me any favors or good. I live out in the country now, can shoot a firearm off my darn porch, have 50 cars in my driveway if I wanted to, and I put the trash can out without getting 150.00 death threats...
Sorry about your H3, I really avoid anything with aftermarket gizmo's on it (especially Land Rover's), but I'm not so sure I'd have listed the bad so negatively. If you don't want the hassle take the CarMax offer, and move on, but don't be shocked when you see it for sale for probably 12-14K with nothing probably really done to it.
I'm getting back into Land Rover's myself (picked up a sweet 98 D1) and already lifted it, and installed some new Duratrac's on it. Darn little Rover's are quirky, and sometimes downright silly but damn can they handle the rough stuff. I love my H3's for being refined, and reliable, but I missed having something to tweak and baby. Good luck with your sale, and I'm sorry it had issues, but in the future I'd highly recommend avoiding that aftermarket stuff unless you do it yourself and know how it was wired up vs the 12 year old kid constantly on his phone texting vs taking his time installing stuff.