Re: RASR Customized T-Shirts - Starts at $6.35

what is the shipping cost for 100 pieces send to norway and greece?

Using FedEx, it's about $97.951. having additional $0.97951 to each shirt. And will allow you to save more than $7 from other competitors.
(3 day shipping + 2 Days Production = 5 Days)
Other Shipping Options:
24 Hour Shipping - $118.07
(1 Day Shipping + 2 Days Production = 3 Days)

the OP says 101+ customized T-shirts - $5.72 each with free shipping! so if i order 101 instead of 100 i will get the free shipping?

You will get the free shipping at 100 shirts. It is only asking what is the shipping cost so I just answered it what are our expenses when we are shipping.