Shower fitting

[Ric.ror]

Approx how much does it cost
From scratch

[AlBags]

Soap dish £3-100
Toothbrush holder £3-100
Cheap Shower £80
Expensive Shower £3000 approx.

[rowanwitch]

depends on what sort you want... over the bath or separate unit, power shower or from the taps...

[TonyV]

as above -but you may need new cable running on seperate circuit - are you thinking of electic one?

[Ric.ror]

Yes
I have one at the moment but I fancy a newer one

[Mosaic]

If you're replacing exactly like for like, then the costs involved will include the shower enclosure - re-using existing tray or buying new - if latter, all appropriate waste pipes and fittings beneath shower - are you using existing water supply or going for new taps, shower-head etc - tanking and tiling, or scrubbing up old tiles - sealant gun and sealant.
In all of that you will have ranges of choices, so only you can really cost it up according to your taste.
But don't forget - labour costs will outstrip everything else. Which is why I do my own.