doll mfgs
good mid teir dolls, priced 1-3k or so
TPE:
wmdollshop.com (1-3k)
dh168 www.dollhouse168.biz/index.php (1-2k)
http://www.hgdoll.net/ (also sells other mfg including catdoll, piperdoll, d4e, ect, approved vendor 1-2k and often cheaper due to deals)
https://catdoll.club/ (800-1.5k)
piperdoll.com (1-2k)
d4e www.doll-forever.com/en/ (1.5-2.5k)
jydoll (can be seen on hgdoll 1-2k)
https://www.j-suntech.net/ (500-2k, reseller for silicone at markup)
axb (generally supercheap, if you find random ones that dont match any other seller it might be an axb)
http://www.dollter.com/ (500-1.5k)
http://www.irontechdoll.com/
https://www.topsexdolls.eu/irontech-doll#max_price=1362
https://www.hidollshop.com/ (clones, 1-2k)
https://www.sydolls.com/
https://www.afdoll1.com/ (lot of sub 1k, not sure on quality)
https://jarliet.com/ (500-2k)
https://www.sedoll.com/alloy-skeleton/ (alloy skelly, 1-2k, details somewhat unknown)
 
silicone:
dsdoll dsdoll.us or exdoll.com (sister sites, all models available from both, also dsdolleurope.com) (2-4.5k)
sanhuidolls.com (2-4.5k)
gynoid www.thecityofsexy.com (4-6k)(recent material and construction issues, order with care)
aikodoll(US based, 60/80cm) (500-800)
www.sino-doll.com (2-2.5k)
www.kuma-doll.com XYColo advanced skelly(~$4k)
 
3rd parties(can be cheaper or more expensive, check with the mfg site)
thesilverdoll.com
reallovesexdolls.com
dsdolleurope.com(european DS distributor)
https://sexdollcanada.com/ eh
dollstudio.org (good as an infodump, not great as a seller, does have some uncommon stuff)
https://dollto-china.com/home.html (some are slightly higher than oem, but lots of options in one spot)
sexye aliexpress store (moderate quality knockoffs of stuff like DSdolls but in TPE)
 
mexico importer
https://mysilentpartners.wordpress.com/