I've never seen an authentic retro at the rock. I've only seen fakes.
Does Hockey Monkey normally sell authentics?
All I have seen at the rock are the CCM team classics version replicas they have been selling since the first retro game. The only authentics devils den have ever sold are indo edges. Devils den is pretty much the worst place to get jerseys and customization done. Only place they is probably worse is shop.nhl.com
Hockey monkey in Woodbridge sold those reebok authentic retro jerseys for a time when the first retro game happened on 2010. Back then they were about 300-350. I guess they ordered too many and the price was too high as when I was there in late 2011 they had a few left over on clearance for $150 so I picked one up.
I see people wear them at the rock here and there. On Wednesdays game I saw three different people with them on. They were the authentics and not the Chinese knockoff versions. You can easily see the difference mostly with the cut, color shades and materials.