i purchase 30" wide roll ends from the local newspaper- they have ALOT of paper on them! and cost $22
one roll lasts me almost 10 years! we use it for lots of things- wrapping packages- wedding banners- paper piecing- pattern making- the kids roll out a big ole piece & lay on the floor coloring---it lasts & lasts! great deal.
they also sell a wider roll but i've only purchased the 30" wide ones.