OneSixthKit is my #1 choice for 1/6 figures.
OneSixthKit aka KIT CHEN is the most trustworthy and reliable seller for me personally. I have had nothing but good interactions with him. When a figure came with a scratched head sculpt (nose of Gus Fring was damaged) he immediately contacted Mars Toys and issued a replacement head sculpt to me. Treat Kit with respect and Kit treats you with respect. Second example: Customs were slow with an INART Joaquin Joker 2 Pack (out of Kit's control) - but Kit and I had e-mailed back and forth and he assisted me along the way with updates. I lost count how many figures I have gotten from Kit and how many I still have on pre-order but I know I'm in good hands and that's why I continue to do my business with OneSixthKit.