Great news. It took some digging, but I believe I have found a more affordable source for these brushes and I am posting my results so that it may help someone else in the future.
My Dankoff Slowpump is the AC model, not the DC model, so please be aware of that.
The brushes I just bought, based on the dimensions of the old ones bought directly from Windy Dankoff are the same as item 1900030.11 that can be seen at http://www.carbonbrush.com/leesonfhpbrushes.htm they can be reached at 800-500-7311 and are about 8 bucks ea. plus shipping.
They have a Figure eared cap, the grade is H610, 0.230" = spring diam.,0.223" = cap diam. Thickness = 0.312" width = 0.312" length = 0.560" material = Graphite G and the copper wire Lead = 0.656"
I learned more about brushes today than I ever thought I would need to know. : )
When they show up in the mail, I will confirm they are correct visually and update my findings here.
Thanks for your suggestions folks. This list is fantastic.
If you want to order the brushes directly from Conergy, their part number is DSP01576, but they run 15-20 per brush. Oasis Montana had the best retail deal at $25 per pair plus shipping.
Best of luck folks.