What are the disadvatages of point of sale?

There really are no disadvantages of a point of sale system as long as you have the right one for your specific business. They offer so many advantages over doing things manually. Reporting, Loss Prevention, Time Management.. The list can go on and on.

Find a smiliar busines to yours and see what they are using for the Point of Sale. That would be a quick way to see which would be best for you.