I've upgraded to a set of Astrodon filters specifically matched to my sensor so I have a set of SBIG filters to sell. The set of five parfocal 50mm round unmounted filters includes L/R/G/B and a clear filter. (I've had them in a QHY filter wheel).
I believe they are the same as this (US$695):
http://www.optcorp.com/product.aspx?...6-823-836-6177
There's also this SBIG pdf about the spectral characteristics:
http://www.sbig.com/pdffiles/SBIGFilterSet.pdf
Here's a few shots I've taken with them:
http://philhart.com/gallery/Astropho...tares.jpg.html
http://philhart.com/gallery/Astropho...ebula.jpg.html
http://philhart.com/gallery/Astropho...iades.jpg.html
Asking $350 and I'll pay postage..
Phil