Digital BW, The Print

Hi,

I was thinking of buying a roll paper holder and rolls of paper on 
the apparently erroneous assumption that it would be cheaper than pre-
cut. Then I did the math and discovered that a standard 32' Epson 
roll could (theoretically) produce at most 20, 19" prints. And prices 
for rolls are slightly to significantly _higher_ than for boxes of 
20, 13x19" precut sheets, e.g. Prem glossy roll Can$102, box of 20 
13x19 sheets Can$81.50. 

Apart from being able to print oversize panoramics, and presumably 
save on prints that are <18" long, is there any economic advantage to 
the rolls. How come no one else apparently makes 13" rolls for the 
epson printers -- or do they?