In my experience with 'entry level' custom rifles, that sounds pretty much the norm for accepting work from clients.

Custom rifles don't always appreciate in value. Even bespoke firearms from high end London gun shops have different values (to those in the 'know') depending on who did the work and where the components came from.

From what I understand from American gun literature, Mr Wiebe is very popular and a high end gunsmith, able to command high end fees. In Australia we call it 'working with golden tools'. It costs golden money.