I'm under a pro deal so I went through a rep. Retail custom process requires a visit to a dealer and is a $100+ upcharge from retail price. Final cost depends on what you request on the skates.
My new Graf 755 Pros. Had these made up last month:
Carbon quarter, AMC liner, oversized toe cap, asymmetric tongue, LS Edge holder. Still haven't been able to get on the ice with them, but the fit is spot-on.
I have the AS1s now and the foot bed is very similar to a Superfeet except that it does not have any substantial heel lift like super feet do. There's a Velcro piece on the arch that you can place either high or medium arch support pieces that stick there, or don't use any of the pieces for low arch. I haven't skated on them yet but they feel decent.
Let me just say that the pro custom fit is pretty good off the ice. While baking in store the boot and the heel especially felt like it was sucked into the boot, much more so than the stock retail. Hard to really tell without skating on them but so far I am impressed with the fit.
From what I've heard thru the grapevine, within another year or two all of the top level skates will essentially be "custom" and shops will only be able to stock 2nd from top down, all as part of manufacturers' efforts to manage inventory control.