It seems like the general impression of the forthcoming USPS's high denomination stamps is that they look too much like a European design. (One of the funniest comments I saw on the USPS Facebook page was that they look like "seersucker suits waiting for the iron.")
Another criticism is that when a postal patron requires postage in any denomination above the current first class rate, the PO clerk reaches for a meter stamp, not a postage stamp. Some say these new stamps, to be issued later this year, will go begging if current practice prevails.
The stamps were designed by Michael Dyer. Whatever you may think of them, give the USPS credit for trying something new.
Stamp image © USPS