I've bought 2 wenge necks off Ebay. Both only needed minor fret work & that only cost me $25 NZ per neck. Great necks. And I've bought 1 Maple neck off Ali Express. Just needed similar work on the frets. So, all three have been good purchases for me & I'd happily buy again from either place.
Here are pictures of all three necks on my made at home parts basses.