Thanks for the information on cost. I need more information on support types though. I think that mention of any of any papers other than Azo types are off topic and I have no answer for them. My efforts are directed at Azo types and Kodabromide/Brovira types.
Just checking over at the B&H website, graded fiber papers by the 100-sheet 8x10" box range from about 80 cents to $1.30 a sheet, and as another point of reference, Harman Gloss FB AI baryta inkjet paper, which doesn't even have any silver on it is $1.40 an 8.5x11" sheet. Centennial POP is also about $1.40 a sheet. Based on that $2-3 a sheet sounds about right for a handmade paper. If you're doing this in any kind of quantity, I'd think the main limiting factor is going to be drying space.