I've so far got papers from Staples, Office Depot, and Costco. I've avoided the truly premium paper offerings such as the specialty papers offered for archival inkjet photo printing which cover a vast range of quality, construction and price. Some of them I'm sure would be fabulous FP papers, but I'm sure I couldn't afford to write on them, at least not at the rate I write.
I stayed with loose paper since it leaves lots of options open for how they are used, and for people who are looking to make their own notebooks or pads. The people who are happy with "premade" seem to have plenty of options already.
As you look at the table you'll notice that there are comments and a lot of blanks. I welcome additional papers to add or more data for comments. Also I'd be happy to provide the US data for cost as well if someone feels up to collecting it.
So here's that table in the hopes that others may find it useful as it stands and in the future it may provide a ready shopping list for those who are just starting out so they don't have to buy 1000's of pages to find out which ones are good.