The price of dental floss ranges depending on brand but typically it will cost around an average of just £2 or £3. It is largely inexpensive when compared to the cost of dental work that could have been prevented by regular flossing.
Dental floss is widely available. Where there are toothbrushes and toothpaste there will be dental floss. Shops such as Boots and Superdrug and major supermarkets which all have a wide range of teeth cleaning products available will usually have a good selection of dental floss available too.