LOL!
I perform that exact service for a number of overseas friends.
And I don't charge anything for it.
BONGO's prices seem around 20% higher than regular IntlPriority (I just tried a few countries and weights).
It's a good idea, but the recipient has to decide if the costs are worth it. Might be a good deal for an overseas small business.
What do they think they can do for your business? Or was it just general emails/solicitations?