The actual question according to the customs the amount of duty-free purchases per month.
Want to buy a few pieces of iron to the amount of OK 800$
A total of 6 items price from 135$ to 100$, just to clarify this is a Japanese ballscrews, used.
Accordingly, for the custom as I understand it you need an invoice, with the price of used parts, in the case of new list price easily jumps above 200-300$
So the actual question how is this tax-free amount, name of the recipient or on behalf of the payer?
UPD found the actual article describing all the details