Original photograph taken near Redstone Colorado. Postcards [4 x 6" 10.2 x 15.2 cm, USPS standard] are offset-printed @ 2400 dpi by Overnight Prints.com with a glossy, UV-protected front and coated back on quality, firm 15 pt cardstock. This printer produces an exceptional product, these cards are comparable with the best worldwide. All images are copyrighted. Each unit of 100 postcards costs $20.00, a packet of 10 can be ordered separately for $5.00 from this store. Free samples are available by email request.