Ceramic tiles i wasn't supplying them just the adhesive and grout customer was supplying tiles and trim. I priced the job at £20 2mt and around £15 for mats. Nothing difficult about the job no windows etc. just around the bath area.
You're selling yourself short Rad.. you're going to be there at least one day, two if you're doing the silicon; Day one; leave home, arrive on site, set up, prep and prime the walls, fix the tiles, allow adhesive to dry, grout, allow grout to dry, clean tiles, washdown, clean up, pack up, go home.. day two; leave home, arrive on site, set up, silicon, wash down, clean up, pack up, go home..You can do it in a day if the grout dries quick enough and the bath surface is dry enough for the silicon.. To achieve this in a day, you need to be using rsf and a flexi grout such as mapei, otherwise the addy and grout won't be dry enough and the silicon won't bond properly..At retail, a bag of rsf is £30+, a bag of mapei flexi grout £15+, tube of good quality silicon £7+, plus your spacers, sponges, etc. The fact that you can get the materials cheaper doesn't mean you charge it at that price, the difference is part of your profit margin to help cover your overheads, warranty, etc..Assuming you did it in a day then labour would be between £100-£200 depending on your skills/area. Realistically, the silicon will warrant a return visit so it's another half day between £50-£100.. Then you have your expenses at say £30..Then you should add a percentage of the labour cost/expenses as the balance of your profit margin..remember, your wage is not your profit margin, it's an overhead..
Whilst there are clients out there who will always go for the cheapest price (and most live to regret it), most clients are wise enough to realise that tradesmen have to make a living/profit.. They have a fair idea of what the going labour/material rate is and how long it would take to do a job properly..If they think your price is too cheap, they'll think twice about using you..