Details:
POS System includes
laptop
receipt printer
barcode scanner 
cash drawer

ChromisPOS system (no rent)
Chromis POS is an open source POS software for shops, restaurants, bars, and other locations. It supports multi terminal mode, and works with a number of open source database solutions. It is supplied with the ability to use a Derby embedded db as standard, but if you wish to use a multi terminal then a product like MySQL is used.The program features multi sales modes, user customizable sales screen, ticket and receipt layouts, kitchen display monitor, built-in customer database, built-in reporting and reports, and more.