I would normally say to try and stay away from eBay, but that seller has had only one negative feedback in the last 12 months, and only several neutral. I'd say go for it.
Finished: Armin Arlert, Mayoi Hachikuji, Tomoko Kuroki, Ultimate Madoka, fem!Masky
In progress: Kougyoku Ren, Lightning Farron
Upcoming cons: Sabakon, Youmacon, Con+Alt+Delete