Generally speaking, George Wilder is right about the rolls [110613
MMDigest].  However, roll sales depend very much as to the roll
title and the artist playing the roll, if stated.

Roll titles in the rags and blues category are much more sought
after than the general pop tunes of the 1940s and '50s, etc.  If you
have rolls in these categories or other categories with well-known
piano players as artists, they should be sorted out and sold
separately, in my opinion.

Good luck!
W. Deane Wiley