Exclusive Pro (to my knowledge) is a warehouse style place in Illinois. They do the official lettering for many NCAA and NHL teams including the Devils. So when you ship your jersey to them you know you're getting the same exact lettering that the Devils players get on their jerseys. They used to also sell jerseys but they don't anymore. Basically you place an order on their website, ship them your jersey with the order form and wait a while. When it's done you'll get an invoice from one of the employees there and you'll pay. They can letter Devils retro jerseys if you ship them one. Just be very descriptive of what you want. I just had an Elias done there and the lettering cost me $60 and it was $13 to ship it back to me so total charge was $73. I am expecting it on Monday or Tuesday next week and once I get it i'll post photos. The Reebok replica jersey cost $90 on Amazon. So for a total of around $160 I'm getting a legit Reebok replica with official Devils on-ice lettering.
Also from what I have heard floating around one of the biggest reasons that EPS doesn't sell jerseys anymore is due to the Indo-Edges that came out a couple of years ago. Apparently they got a lot of angry customers who ordered authentics through them and they received Indo's as that was what Reebok was and is selling as authentics. Figured it was not worth it anymore and just stuck with doing lettering.
Again this is all rumor. The job that EPS does is top notch so it is well worth the anywhere from 4-12 week wait.