I guess I see things differently. I'm all for DIY, hell, DIY is my moniker!
But I knew going in 6 mos. ago, that Autel wasn't the biggest kid on the team, but what they had to offer was worth so much more to me. The better product. Period. The customer support reports have been nothing short of stellar, and I've experienced nothing short of stellar expectations.
The likelihood of your needing a motor at some point is minimal at best. What it costs to send it in for repair would cost the the same as the part itself + your time/effort. If it is truly important enough to you, I suggest buying a crashed bird for parts. But that may take awhile as these things are tanks and don't get destroyed easily like other drones do. I don't recall ever seeing a crashed or trashed XSP on eBay...DJI drones are a dime a dozen crashed and trashed.