Price rounding to the nearest 50c

[csimmo]

I have a tonne of rules as I have a tonne of products. I want to round to the nearest 50c. There seems to be plenty of people asking the question, but I can't find any answers. Anyone able to help?

[csimmo]

Seriously nothing?

[Milbo]

Check the feature Rappenrundung,... there we use the swizz rounding which is 0.00 or 0.05. Just extend the code there. I am sorry, but here you must hack the code, no one had this  request before.