My middle man for YAJ stuff is
http://mukunoki-jp.net/ Very nice and trustworthy guy and answers very quickly.
I made a small example calculation for you:
- For example: towel + stickers: 3500 yen
- bank transfer fee: 300 yen
- shipping from mu-mo to mukunoki is 500 yen, I think
- shipping to your country by EMS, Airmail or SAL (for example a 500g package with airmail to Germany would cost 950 yen; shipping price list that I've checked:
http://www.akibado.com/shippinglist.html)
- total: 5250 yen + 20% comission (PP , with CC it's 23%) = 6300 yen
I think it's quicker if you buy your goodies from a Ebay seller but it's probably cheaper if you buy it through a middle man, especially if you want to order more than 2 things.