I have one, I think it would be 50m, a couple bits are cut as I had a pheasant try and hang itself in there and a hen that decided to lay in the roll when I gave up on it and put it by the garage door, got herself in a guddle and had to be cut out too.
I'd sell it gladly but no idea what to charge or where you are to see if it's worth thinking about, and I've only the one roll.
I'm in North Fife if you want a look.