Out of curiosity - after you pick the package up, ask them to weigh it and calculate how much it would cost to ship from the sellers location to your location. There is always a chance that there is a mistake in the weight/postage charged.
A few years ago I shipped a gift of a DVD to a friend in England. The cost came to $55.00!!! Ummmm ...... NO! Believe it or not, but the computer monitor that the clerk was using had been moved so she could see it better - and the end of the monitor was pressing on the edge of the scale!! Once the monitor was moved and the scale was recalibrated, the postage came to something like $9.00