Digital BW, The Print

I think this might be a bit OT but... 

I've been starting to sell prints on HME (Museum Etching) and Crane
Museo. 3MK BO prints. 

As of now I've been selling prints only. I was thinking of offering
semi finished products in the form of matted prints.

But after going trough my (limited) mats samples, I could not find one
that I liked. One might look good with one paper and for one image but
for another image on the same paper, it would not look good.

I find this very complex as I'd have to stock many mat colors. I also
think mat color & framing is a very personal choice.

Would be easy if I was the end user, for example an exhibition of my
work (maybe someday... ;-) ).

What do others on this list who sell prints think about selling print
only, matted or even framed pictures?

Thanks for your advice,

Denis Bouchard