What is a 2nd hand set of Ping ISI Nickels worth?

[IanO]

I recently bought a set of AP2's to replace my ISI Nickels and I think that I might try to off-load the Pings. Questions:
1. Any ideas on what a 3-SW set of Ping ISI Nickel green dot 1" overlength shaft 7 or 8/10 clubs is worth?
2. Is ebay my best bet?

Thanks

[pt73]

The last set i saw on ebay went for $500+ but they had original Ping graphite shafts.

http://cgi.ebay.com.au/Ping-ISI-Nickel-Irons-3-SW_W0QQitemZ140351565155QQcmdZViewItemQQptZAU_Spor t_Golf_Equipment?hash=item20ad9aed63