I grabbed a basic thong/triangle top from an Amazon seller out of China. I knew the material would be hit-or-miss but I didn't think too much about the fit of the bottoms (which did not have ties). If you're buying from someone like this, make sure that you get a bottom with ties so it's easy to adjust the fit.
I have few here from China .. and They are Freakin Junk... and Not able to get rid off the smell .. I prefer BerryDog Hand made, and made in us. Oh yandy as well !
Have you tried Bikiniflirt.com they have some good deals just saying not sure that is what your looking for but they are cheap and do have an ebay store also.
already suggested,but, here is the La Vie En Rose website. La Vie en Rose Swimwear - Mix & Match tops and bottoms, one piece, beachwear, accessories.
Wicked weasel has some of the sexiest bikinis! And the quality is top notch, I have about 12 of them now and love everyone of them!
La vie en rose now carries a thong bikini bottom:https://www.lavieenrose.com/en/thong-bottom-black-19660 as well Victoria Secrets carries a thong bikini bottom: https://www.victoriassecret.com/swi...ong?cm_sp=&ProductID=254592&CatalogueType=OLS SW&TW