Well, I did some research on ebay's completed listings and it looks to me like Slingerland, (like The Jeffersons), is moving on up, here's a few examples compared with the other three big American vintage drum companies.
Ludwig....
Hollywood blue sparkle - $1,800
Champagne sparkle 4pc. - $1,200
70's mahogany - $510.05
Clear vistalite - $400
Rogers....
New England white - $799
Big R double bass - $264.99
Gretsch....
Round badge - $751
Slingerland....
WMP - $1,700
WMP - $1,499
Champagne sparkle 3pc. - $995
Red sparkle - $799