What is the fine-grained topic of the following text: For those looking to restructure their existing credit or store card balances, based on a typical balance transfer of £2,000 from a card charging 17.9% APR (variable), with 0% for 15 months and an effective 0.70% balance transfer fee, moving to this credit card would mean customers would be £377.46 better off over the 15 month period2. Only return the topic.
Credit card balance transfer benefits