Go trade me - cash converters is a rip off, the BIL took a brand new$800 ring & they offered him $80!!! (farmers had the buy 1 get 1 free deal and well he didnt need the second ring!)
Trade me is good, check out other stuff like it and set a reasonable reserve. Dont expect lots though, i had a ring that was $1400 new, 2.5 years old and i got $450 for it