Well you're not providing all the information. A Hankins' rifle can be ordered with any number of barrels from different manufacturers, not just Brux.

With the UF, you get one choice of barrel from one manufacturer, rather you want it coated (BW) or not, its from one manufacturer and only one, all the same barrels setting in a shipping container. You DO NOT get a bedded rifle from UF, regardless rather it is one of either of the TWO models now offered. If any part malfunctions or breaks on a UF rifle, it can be repaired/replaced the same day, including the breech plug, without prolonged fitting and the barrel. All parts are readily available and nothing must be ordered.

Hankins may, I don't know, have an inventory of parts on hand, to which if someone rings a barrel, he can screw a new barrel on it, screw a breech plug into it and send you out the door?
Each and every rifle Hankins builds is different than others he produces. He also installs the (any) trigger of the purchaser's choice, along with many other options. Hankins build TO THE PURCHASER'S REQUEST (to a limit). Each rifle is a "one of a kind".

With UF if you order a BP Xpress, that rifle, short of two different stocks if still available, is identical to the rifles he built 3 years ago, or the rifles he builds in the future. If you purchase a BP Xpress today, it'll be exact to the one I have owned for three years, unless the stock is ordered.
UF builds the same rifle for anyone who orders. Yes he builds them once they are ordered. He's a 78 year young builder, who doesn't over stock his shelves with complete rifles.

So you're comparing a builder who builds "One of a Kind" rifles, to a builder who builds the same rifle for anyone who orders.

There are differences.........