Enusuite refurbish

Hi,
Getting ensuite refurbished.
Have got a quote ofr £3400 for labour and plumbing supplies(grout + tile adhesive + board +timber) (BUT NOT TILES , TOILET BASIN SHOWER ETC. which will be supplied by me).
The work is
1) strip off existing tiles + shower tray + toilet + floor tiles + vanity unit + basin.
2) Rebuild the walls (waterproof board) as necessary.
3) Retile the walls ( 12 sqm)
3) Retile the floor (3 sqm)
4) Install new vanity unit and basin
5) Install new toilet
6) Install new shower controls/shower.
7) New shower tray
8) New shower door.

I will be supplying all the major mateirals including tiles, toilet,basing ,vanity unit, shower,shower door & tray.
The plumber will supply other building materials including grout, tile adhesive, boards, timber , and pipe fittings etc.

It is approx 6 days worth of work.

I have been quoted £3400. Is this ok?

Many Thanks.