So assuming that you use 10x8 RC black and white paper, where do you buy it from? I've generally gone in and picked some Ilford MGIV up from vanbar as they seem to frequently but irregularly have 30 sheet packs on sale for around $40. They also currently have fotospeed 100 sheet boxes for $99, but I've never tried it. BlancoNegro in Sydney have foma paper but the postage makes the price similar to the local supply of Ilford so it's not overly enticing though I have tried some. Any other options that you've used? B&H in the US doesn't seem to be that competitive either once you factor in postage.

I bought a box of 100 sheets for my Xmas Calendar in early December from Michaels. They had at least two 100 sheet boxes, and (according to my note on the last box) were at least $10 cheaper than Vanbar were same time the year before!

Marc!

I tend to buy from B&H, but will do a big order to offset postage. The hardest part is getting that sweet spot.

When in Oz, I used to buy unwanted photo paper, and sales at Vanbar. I mostly bought new paper from Blanco Negro when they had sales and would cut down larger sheets to 8x10.