Agreed ! If you can buy singles on eBay you will usually get a better deal than buying pairs.Pairs will always get top dollar. You can get a brand new pair from GPA for a pair of 416-8c's for $560 or for singles $280 each + shipping.For me it is sometimes worth spending a little extra than dealing with some sellers on eBay.And they are BRAND NEW !

http://www.greatplainsaudio.com/downloads/416_8C.pdf

Altec Lansing GPA 416 416 8c New | eBay