The APX8000 is a current production LMR product, so that's apples to oranges. Once cancelled, MSI does support it for a few more years. None the less, APX ANs are unsupported and they can be had for that, not multi-band, but 7500s are hitting the sub thousand dollar range for mid powers. That's what happens with technology products. An iPhone 12 does just about everything an iPhone 16 does sans sat messaging, and they can be had for under $200 new.
The XG-100P isn't worth hundreds. When it breaks, you drop it in a trash can. Need it aligned? Good luck with that. Want a feature string? Get ready for L3H to laugh at you, even if they entertain end users. (MSI will sell flash upgrades for APX8000s all day long), and APX8000s are fully depot repairable.
Of course none of this matters for Ebay/grey market radios. No manufacturer is obligated to provide any level of support. "We service what WE sell" used to be on the back of every Radio Shack receipt. It speaks volumes. The suckers born a minute who pay four figure prices to third party sellers than want to file level 27 butthurt reports because (insert vendor here) won't help them with their parts built trash are always amusing.