There are many factors which will influence how much a tiling job will cost you. Largely it depends on whether you are providing your own materials or looking for quotes from tilers who will supply and fit the tiles, including providing tiling adhesive, tiling grout and trims. Many people forget about the additional costs involved in tiling jobs, even down to the tile spacers which do not cost much but are still a cost which must be taken into consideration.
Bear in mind that if you do ask your tiler to provide materials for you, whilst they may be able to help you with trade discounts from their suppliers, generally speaking the costs of the tiles will be more than they would cost if you sourced them yourself. Tilers are in business to make a profit and will normally mark up the materials to cover their administration costs, etc. It will ordinarily work out cheaper to take a trip out to your nearest tile supplier (there are many now on the high street who provide a broad range of tiles and will also have helpful staff with a good deal of knowledge on the subject of tiles to be able to advise you), and source the tiles yourself. Why not make a day of it. Ask the DIY store adviser how many tiles you are likely to need for your job. Its wise to measure the room size first before you go so that you can give them some idea of the area to be covered with the tiling. Also, ask them how much tiling adhesive, spacers and grout and trims will be needed for the job too.
Tiles vary wildly in price range from a couple of pounds (even less sometimes) for very basic tiles, right up to 100's of pounds per square metre (the luxury end). What you pay will obviously depend largely on your budget but if you are looking to keep the costs down source the tiles yourself. There are also many online tile suppliers who will ship the tiles out to you within a few days and you could get some very good deals by simply tying 'cheap tiles' into a search engine. To keep your costs down on your tiling job it is seriously worth considering sourcing materials yourself as there are so many types of tiles that it really is a personal choice which cannot be delegated to your tiler of choice.
You have your materials but now you want to know how much you are likely to pay for labour. Again, prices range. A bathroom fitting company who are providing a tiling service within a full bathroom refurbishment is likely to charge you much more than a sole trader / independent tiler who works as a one man band. However, whether you will get the same guarantees from a sole trader is debatable. Look for good deals at times of the year when companies in the construction industry are unlikely to be quite as busy. Tiling is after all like any other business. Supply and demand often dictates the price. The average price for a tiler (outside of London areas) is around £35.00 per square metre however you can usually find much better deals than this if you get 3 quotes which is always recommended from tilers. Remember though, cheap is not always good. Check tilers reviews on past jobs before accepting quotes.