It seems that the bookkeeping king is made of a USB flash drive (similar to a USB flash drive)
There is also no bookkeeping item function of this mini version of Bookkeeping King.
The price bookkeeping king is around 600 and the mini version is around 2000.
It depends on the quotations from dealers all over the country. There is room for bargaining.
It is more practical for you to consult the local agency.