All this for one sticker?

[LukeSi]

I'm not complaining, but did you really need to send one 3.5" sticker in an A4, card backed envelope? Surely it would be more sensible to have envelopes half the size?

[ShampooEfficient]

LukeSi said:

I'm not complaining...

Yes you are!

[Spanna]

Cardboard backed - it's a sticker and if it gets folded, it's no good.
A4 - no idea, A5s are cheaper to buy and cost less to post.