Quote from soniix
290% MF how do you achieve this high MF? are you playing a witch doctor?
I spent a few mills and now have 282% with around 15k dps (which is low, but managable for WR/act1). Everything above 280% is just a huge investment. In the end it cheaper/smarter to get lesser mf items (1 or 2 off), that in return have higher primary stats / resistances. There's really no point in maxing the mf value if you can't kill anything.
There will be very few additional drops from the last 10-20% before max, that you can achieve.