I recently stumbled upon this shop http://shop.lpcatalog.com apparently it's from makers of lpcatalog.com the site for Linkin park collectors. Anyways I bought a cassette there, few hours later I received an invoice with shipping costs BELOW those on the site, but I think it depends on the order.
The order was shipped same day and arrived without problems, they even put some extra stickers.
I'll be honest, I've been asked to spread the word but the shop is really great, they have big stock of stuff that's hard to get. If you like linkin park you for sure should visit the shop!