I'm in the process of a gut reno for a standard 7x7 bathroom. Nothing crazy here, but I am getting quotes that seem quite high. No custom materials, standard tiles. What should this cost?

Demo and removal
Install new GC supplied backer board
Install customer supplied tile on walls and floor
Install new branch lines to risers
Install customer supplied tub
Install customer supplied vanity and sink
Install customer supplied med cabinet
Install customer supplied shower doors.

No re-framing, no relocation of anything, simple gut and replace.

Work with building RA and file LAA permits.

Thanks in advance