If you're rounding to 0.05, you don't even need to break ties - any price ending in an integer number of cents can be rounded fairly to the nearest 0.05, e.g.

If you're rounding to 0.05, you don't even need to break ties - any price ending in an integer number of cents can be rounded fairly to the nearest 0.05, e.g. 1.00 -> already round 1.01, 1.02 -> round down to 1.00 1.03, 1.04 -> round up to 1.05 1.05 -> already round 1.06, 1.07 -> round down to 1.05 1.08, 1.09 -> round up to 1.10 1.10 -> already round