overpriced axles?

Why do you want 7/16 studs? The BBP axles use 1/2 inch studs. This may make the price a little higher but keep in mind you are getting axles, studs, bearings, retainers and retaining plates too, not just axles. It may be a little cheaper yet if you install those items yourself.

BTW I'd get the screw in studs instead of the pressed ones if I had it to do over again. Much easier to install and change.