Re:POS for mobile vending
I don't have my book in front of me but if you have a royal till it's not to hard. Price look ups. Set the till to program enter plu #, enter price, enter description, enter Dept #, or something like that.
At the end of the day you run an X or Z report and it gives you what you want. I looked up Royal cash registers, 100 to 350 dollars.