I have had this one for several years.
https://www.google.com/#tbm=shop&q=l...91935442286119
but sure did not pay that for it. It was less then $50 but even at that time most were close to $100.
I do not see why it is so expensive. Even $50 seemed a lot but I was desperate.
The 12x18 size is great.
The slant is not necessarily desirable and I end up having to use some painter's tape to tape pattern sheets down.
Have you considered Craigs List?