i just got a quote $5500 from a contractor for whole toilet but he didnt itemize his quote. is this quote reasonable for a contractor? ( old 5 room flat master room toilet 127sqm) 1>hack wall and floor tiles 2>install wall and floor tiles 3>hack bathtub 4>supply and install basic basin and wc 5>reinstall piping 6>supply and install aluminium sliding door 7>waterproofing whole floor