[TYPO3-shop] User group - price without tax (international customers)

[Marko Minic]

Hello,

I am using tt_products 2.7.1 and I need to have 2 user groups. Users 
from first group have prices with tax and user from second group see 
product prices without tax. Also, email and invoice should be generated 
with or without tax depending on user group. Is it possible? If it is, 
can somebody give example?

Thanks in advance,
Marko Minic