Hmm > $50US is a damn fair amount, especially in hong kong to say the least. Packing materials or not, this is excessively high. All of my RK orders just come in an old cardboard box with no bubblewrap or foam peanuts anyway - so I don't see their reason for stating otherwise.

Don't be hasty and go filing any paypal disputes against them - they've got pretty good customer service and are quick to rectify any problems. I'd definitely contact them first with the exact info below. I'm sure RK support staff will be happy to refund the difference or provide store credit.

Good luck Zip!