BLAKEAWAY review for Feesly: Surcharge & Fees (POS)

App does work as required - adds percentage based surcharge to POS checkouts. However it is not able to calculate a surcharge at any point of adding items to the checkout (only at the end). Lastly, the time taken to apply the surcharge to the checkout is far too long (as long as 20 seconds). I'm not sure of the math on that but in a 6-8 our working day serving customers at the POS, were losing lots of sales time in waiting for a surcharge to apply.