For bulk items less than 5000 yen, with 10 items or more in the lot, an additional charge of :

 

And you want to buy this lot , which is less than 5,000 yen and has over 10 items in it:

The fee will be list price x 1.2 + 200.

3900 x 1.2 =4680 yen + 200 yen = 4880 yen