Ok - my legal card stock is from paperworks.com and I know it's Wasau paper, but I can't find a reference to what weight / thickness I ordered. I know when I check it with my calipers I get 0.21mm or .00085", which according to the sheet provided looks like 110 lb. index stock maybe? IIRC a package was something like $15 with shipping for 250 sheets I believe.
If I had to guess looking over the sight, this is what I ordered -
Exact Index Cover White 8-1/2x14 110lb 250/pkg: Paperworks.