1) as responsible vapers we dont buy off eBay, unless you own the original and know what your looking for.
2.) some people buy clones, but experienced users dont recommend hybrid mechs as your first mech mod, as they take an additional layer of knowledge. i.e., you have to be careful about which RDA you use with them or it will be your last time vaping (I don't know about your first choice but if memory serves me correctly the RIG v3 is a hybrid, granted the manufacturer couples it with a RDA, but on clones Lord only knows what your getting so you have to make sure of the RDA.
3)
@lupinehorror might know some good clones for you.
4) I might suggest this as it's an inexpensive and decent clone that is not a hybrid mod which would give you some experience with a mechanical.
HCigar Nemesis Mod Stainless (Its a clone made by HCigar, and owners said it's one of the best clones out there of the Nemesis)
5) Do more research into mechanical mods. No one buys mechs off eBay. You don't even seem to know about hybrids or why people avoid clones in the first place ... you need more knowledge overall.