I am unable to get pricing fields > products field (configured as a Single Product) to work. I keep getting "please enter valid value" error unless I set the price of the product to zero or convert it to a calculation field. The problem with using the calculation approach is that the email summary created does not display the quantity / price correctly.
I have switched currency from Euro to USD, and this did not help.
See the field "TEST product Name 1"
http://www.cloudspartner.com/presupuesto/
Thanks!