The last donation was big enough to help me cover that gap, and I think this wonderful person wishes to remain anonymous due to the size of the donation.
Gee, wish I got free stuff.
Spend hundreds of unpaid hours messing with internals of GPU programming (I guess at this point DiabloD3 knows parts of the ATI hardware better than the AMD engineers). Write one of the most used miners and a mining core that's used in other very popular miners as well. Also be supportive of it - answer questions, test bugs, do fixes and continue improving it until you squeeze another 1% performance, and another 1%, and another 1%. All this makes money for the miners using it and you're not getting paid.
Then you will get "free" stuff.