More DHL Drama

So, I finally got a check in the mail from DHL to reimburse me for the lost package that I shipped out over a month ago. The check was for half of what I paid for the shipping. I email them and they tell me that DHL only charged the mailing outlet $5 for the shipping and the mailing outlet charged me $10. What's up with that? I understand making a profit, but a 100% markup? I thought that Mary Kay was the only company that did that.

Sigh...