New sources for Epson enhanced mat paper

The company I work for is going though 40 rolls of this a week, we need a cheaper source. can anyone help?
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What paper do you use the most often, and what size rolls? And what printer do you have?

 

It's 44 inch rolls, we have 4 9800s and 1 9880. We use Epson enhanced Mat in all 5 of them.

 

Just to confirm, you currently use the Epson Enhanced Matte Paper rolls 44"x100' 3"Core. If this is correct, my next question is would you consider any other brands of photo paper? And what do you typically print? (photos, color CAD, etc.)

 

It is the 3 inch core, but it has to be matte paper.