There are three primary manufacturing facilities in the U.S. for quality piano covers: Jansen, American Piano Covers, and GRK.
Since we cannot offer such a wide variety of piano covers via this predominantly sheet music site, as of March, 2014 I now suggest you browse the comprehensive listings at AmericanPianoCovers, a web site which offers all three sources, with a wide variety of options as well as embroidery:
Dr. Rein P. Vaga, DMA
Owner, Sheet Music Online