Rojay's Original Art  
   Wide range of mostly modern original comic art, including very high end pieces as well as a large selection of pages and sketches priced at under US$50
   http://www.rojaysoriginalart.com/

Ross, Alex: Original Art  
   Original art for sale from all of Ross' works, including Marvels, Kingdom Come, Astro City, Uncle Sam, and others. Preliminary pencil sketches at more moderate prices are also available.
   http://www.alexrossart.com/

Ryan, Paul: Art  
   Modern-age originals from comic book and strip artist Paul Ryan.
   http://www.Secondstargraphics.com

RomitaMan Original Art - Mike Burkey  
   Original comic book art, mostly superhero-oriented, from the Silver Age to the present. Mike has one of the largest (if not the largest) collection of John Romita Sr. Amazing Spider-man art, and is always looking to add to that collection.
   http://www.romitaman.com

Red Sector Art original artwork - Enrico Salvini  
   Comic art by Giovanna Casotto, Giorgio Comolo, Alex Horley, Alberto Ponticelli, Tom Porta, Roberto Ricci, Eduardo Risso, Saverio Tenuta and an assortment of American original artwork.
   http://www.redsectorart.com/