the replithentics are the same material as the replica(no elastic around the arms) but has the sticthed names and numbers on the jersey like the authentics. the numbers however are not the same as the authentic , yes they are stitched on but different material....same design tho.
if you go off of ebay, make sure that the numbers are the authentic numbers and not they're own that they put on.
my history with ebay is 2 came authentic like the ones from the cowboys store and 1 came with different numbers....not much difference tho. if you're looking to save some money....ebay is the way to go.