Just got one (SS) off EBAY for $7.41 shipped..and this was BUY IT NOW. Could probably have saved $2 by waiting but I thought it was a decent enough price. Lots of cheap copies on Ebay, but most sellers really screw you on shipping. Copy I got was only $4.50 shipped which is an OK deal, even though it will really cost the shipper more like $1.25 if that.
Haven't played SWAT4 SP or MP in quite awhile, but, I guess now the SWAT4 shelf in my Museum of Sims Gathering Dust is complete