Aurora R5, motherboard replacement options?

I found replacement (new) motherboards on e-bay.  I can't vouch for it other than I found it doing a search.  

https://www.ebay.com/p/Genuine-OEM-Dell-1NYPT-Alienware-Aurora-R5-Motherboard-Lga1151/529823556

Your budget's $800?

Dell HQ is in RoundRock, Texas; there is a large surplus vendor market in a ~500-mile radius of HQ that buys Dell's surplus, but of course nation-wide, many other vendors can also buy this surplus & do; when buying new, used & *refurbished* Alien parts I 1st look for vendor location & Texas vendors always get a green light; next I appraise condition & look for signs of factory surplus box / materials; when I see a listing like this I can be certain it's Dell direct (within reason) which is of course a bonus to overcome anxiety & to otherwise affirm the provenance / instill confidence etc

Vendors who accept offers, like below, offer $140, see if accepted

*it was explained to me by someone that knows, that Dell 'refurbished' parts are almost always brand new parts w/ a refurbished disclaimer for legal purposes, as opposed to the connotation that the part was 'used' & 'rebuilt / reconditioned' in some way; refurb can also (& most often does) denote new never used 'surplus'

*find a brand new product like Area-51m laptop, call Dell for a spare part, it could be listed as 'refurb' yet be new never used Dell Direct; this is typical for 'refurb' parts we see online, refurb can mean new in the same way we use the word new & expect it to mean

*Your R5 has to have an original mthrbrd, it can't accept any other kind or brand

Since your budget is $800, if you're skeptical of 'refurbs', then buy 2 of them now & hold one as known good spare; otherwise, buy #2 today/tomorrow/soon & shop for #3 in the future in the event #2 you've shopped for / purchased soon fails in the future etc

Check your mthrbrd part#, then go about buying a 498GR or 1NYPT (I don't know the difference between part #'s, I suspect there isn't one)

If the mthrbrd u purchase does not have an aluminum VRM heatsink (immediate left of CPU socket) transfer yours onto it, if it has one now

I've tried 5 times to post this reply w/direct links, it won't let me (*NOW I know why*). Head to eBay, search term = Aurora R5 motherboard, filters are US Only & sort price lo-to-hi

*edit I could not reply because I typed a naughty word

FACTORY BOXIN!!!!

Seriously!? You cant replace an Aurora R5 motherboard with an MSI or Asus motherboard?

If you want to take the time for an upgrade, there's some R7 motherboards (z370) on ebay for less than that, $90, and a number in the $120 range.  Of course, your CPU would need to be upgraded to 8th gen (I think yours would be a 6th gen, so only compatible up to Z270, as the R5 is at Z170?)  I don't know if any of the proprietary connections have changed, but the plastic shell and a lot of the interior components share the same part numbers for R5-8, and they're both the same size 1151 mobos, so I'm thinking there may be a good chance a Dell mobo to newer Dell mobo option is doable without having to bust out that jig saw.   

I need to upgrade my motherboard and cpu, I have 1k budget. My i7 6700 is starting to be a bottleneck.I was thinking the 9700k. I also have 2 m.2 nvme drives, so I need a motherboard that has at least 2

https://www.amazon.com/gp/offer-listing/B07DD4MP8T/ref=dp_olp_0?ie=UTF8&condition=all