So I bought Avery postcards out in town and used the design section on Avery.com to create my invitations. When I went to print them, I did a quick test print on regular paper and it was apparent to me that I was going to ALSO have to go buy 4 laser-jet toner cartridges. I saw a little green button that read "Let Us Print It For You" and I thought I'd check it out...all told, for 100 postcards approximately 5" x 4", double-sided on SATIN paper, including shipping, was only $10 more than the matte finish ones I had purchased! When they came in (3 days for processing, shipping and arrival), I was stunned at the quality! I HIGHLY recommend Avery for their printing services. I will definitely be using them again next year!