Ok, this paper is definitely not something to print your master images on, but HP's website has an amazing deal on their HP Brochure paper (among others). I use their brochure paper in the 11x17" size to print out USGS topographic maps for free on my iPF5100 when hiking. It's double-sided, glossy, and cheap. Did I mention it is cheap?
Right now HP has the
150 sheet packs of 8.5x11" for $12 after $17.99 instant rebate, and free next business day shipping. That works out to $0.08 per sheet. Yes, per sheet, not per square inch.
The site is painfully slow, but thought I'd pass this along in case anyone needs cheap paper
Neil