You're right. I had screwed up the shipping part of the listings.
They do all fit in a large flat rate boxes (the larger rolls take some
scrunching) -- I've adjusted the 4 listings accordingly.

I love McMaster Carr also. I've recommended them to many folks for
felt and other things. The premise of my post here is that buying my
remnants should be a better deal than McMaster or anyone else. If you
want to do a price comparison look at type F7 1/4" thickness, that's
the dense felt that I use on Wing Rigger saddles. I don't recommend
the adhesive backed stuff.