Daiso nail files are great value for money.

It costs 1,000 won for a pack of three nail files, and if you buy just one, it lasts for at least a year. They file really well, and since there are multiple files in the pack, I love being able to keep them in various places. I've tried expensive nail files, but I couldn't feel any difference at all compared to the Daiso ones. As expected, Daiso offers the best value for money.