A very useful thread,
I use Tenso a lot, just to add a few other things. Once an item has arrived at your Tenso address you can actually edit the customs value and the item type of each parcel thats arrived. Usually Tenso will guess the type of item like game software or hobby goods or food ect but you can change that if you like.
You can mark them right down as a low value but not 0 value, doing this is a risk as if your parcel goes missing thats all you can claim from insurance but so far i haven't had any problems.
One thing new customers with Tenso will have to do is you need to go through a security check with them, which means you will need to prove who you are by sending scans or pics of certain qualifying documents. I used a bank statement & my passport, it's ok though you can blank out sensitive data on them they need to see that you have a valid document with your full name & a document with your name & address, there is no risk.
One other important thing is your name you register with Tenso has to match whatever address you buy from, so on Amazon Japan when you add your tenso address to the address book it's vital that you have your name exactly the same.
I import a lot of Japanese games so if anyone needs help or suggestions then feel free to ask away.