Bests & Worsts Reviews from Amazon

I bought these to send through Postcrossing and they are so flimsy I'm not sure they'll survive an international mail journey. They're about as heavy as the cover of a fashion magazine. I have several other boxed sets of 100 postcards including Vintage DC Comics, James Bond 50th Anniversary, Vintage Vanity Fair Covers, The Art of Instruction, Greetings from the Ocean's Sweaty Face, The Onion, and Classic Ladybird Covers. All of those sets come in the same sized box as the Sibley Backyard Birding Postcards... But - and here's where the publishers have added insult to injury - there is a false back inside the Sibley box which takes up about an inch of space. I presume this is so that when the box sits on a shelf with other 100-postcard boxed sets, it looks just as substantial. But these cards are so thin (think construction paper and not postcard) that they take up significantly less space when you stack them. So, that's an inch of *quality* these postcards lack and an inch they're trying to fool you into believing is actually there. I am disgusted by these postcards and by this deceptive tactic. It might be ok if they cost significantly less than the other sets but they don't. The illustrations are lovely and if you're looking to frame little illustrations, they might work for you. I don't recommend these if you want to actually mail them.