I got an APS e-mail with a promotion to "Shop with Confidence at APS StampStore"

I don't know how the stamp images are chosen or if every e-mail has the same images, but the off-cover bisect (aka half a stamp) caught my eye.
I clicked the link and found that I buy this rarity for only $102 - presumably the entire stamp would cost $204.

This does not give me confidence in the StampStore