Digital BW, The Print

I'm new to this list, and had no luck searching the archives, so apologies in advance if this has been covered
to death:

We are considering the purchase of the Epson 7500 printer (we currently have the 2000P), but are worried about

paper availability.

'Epson Archival Matte' paper is not available in anything larger then Super A3, but according to the Epson
person I spoke with today, the 'Epson Double Weight Matte' paper (item # S041385) is exactly the same as the
Epson Archival Matte.  Does anyone know if this is true?

We will be producing 'art' prints that will be selling for a minimum of $750, and some up to $1,500 per print,

and want to be sure that the prints are stable.

Harvey Ferdschneider
partner, SKID Photography, NYC