Hi
Yes the postcards are mailed like any postcard but if they are heavily embellished it is best to mail them in a cello envelope and ask that it be hand canceled and 'do not automate' and it will cost 62 cents to mail it that way. If it is very flat with nothing to jam up the PO machinery, you can send it for 27cents. Because of stitching, I send them for 47cents...27cent postcard rate +20cents additional fee for 'do not automate' and hand cancel. After all the time/effort put into one of these, I would rather pay more so that they are more likely to arrive safely to their destination.
Right now I am just having fun collecting the PCs, but plan on making a wall hanging with some of them, or possibly even a wall hanging using some velcro so that I can change them on occasion.
sue