Start with the basics if you want to build one yourself or get someone to build it for you material prices have shot up
you want decent materials you source them from luthier supplies you are looking at around £95 then add the postage on
Then the neck has to be made fretted finished & setup
so if you buy a neck under the cost of the materials and you wonder why there is no labour charge probably the neck is from China will be pretty crap needing work
or you got a bargin
brand name necks you pay for the brand quality control and warranty if bought retail
Neck blank £30 depending on thickness and width
Fingerboard £20 depending on quality grade
Fret wire £10
Bone Nut £5.00
Fret Markers + side markers £5.00
Truss Rod £10
Finish £15.00
You think they pay prices like that for materials in China? LOL