Unit Price Field in the Product Creation/Copy View should account for numberformat input

[Steffengreiner]

Is your feature request related to a problem? Please describe.
Creating or copying a product in the offer-manager portlet only allows the rational delimiter "." in the Unit Price field. (e.g. 123.50).
This can be frustrating, when a high unit price is input, since there can't be delimiters inbetween a number, which decreases readability(e.g. 123,456,789.50 is not possible)

Describe the solution you'd like
When creating or copying a product with a big Unit Price, I'd be nice to also allow input according to a numberFormat to account for delimiters in the provided unit price.

Additional context
See Example below and Zendesk #2981