Plaster Cloth material better price @ Hobby Shop or Medical supply

Is it significantly cheaper to buy plaster impregnated cloth At a medical supply house or somewhere else vs Hobby Shop ?

I checked at a medical supply house some time back, and it was higher than at the hobby shop. Wonder if someone (Home Depot, Loews, etc) carries a suitable substitute…

Ok, I found a website that has it. Here’s the lowdown:

The Woodland Scenics plaster cloth is 8" x 180". Cost: $8.49 retail.
*** Blick has it 4" x 180". Cost: $3.69, which although is half the cloth, it is less than half the cost. And if you buy 12 rolls, the cost is $3.32 per roll.
http://www.dickblick.com/zz335/06/
Hope this helps.