You have been working on this GPU miner for
3 weeks now. Provided you are working full time, which is considered to be, in the USA,
8 hours daily, you have been working with a wage of
51.1 USD/Hour, earning a current total of
75 BTC/8,588 USD. (Current Mt.Gox rate)
https://blockchain.info/address/1FKfgFQeZCpjGDn7ocgj26nk4K2TNiVJyDAnd that is how much a skilled programmer should be paid (before taxes).
There aren't many programmers around skilled enough to build a GPU miner. The
donators buyers fully understand the risk involved.
As for speed estimates, it has been asked 100 times in his first thread, it's getting a little annoying. Believe me, if the GPU miner was fast, he'd be quick to post about it as it would boost
donations sales.