please give me suggestions. how much do these rims worth?

[hideric]

this guy is selling me his used BBS rims with rubber (almost new rubber). The thing is i need you guys to give me a suggestion of how much i should ask for. Like the bottom line thank you

http://www.trader.ca/Search/Details.asp?mknm=740&Region=100&subcategory=&CAT=1

[whitec230k]

link doesnt work