As some of you may know, recently there has been several break-thru in GPU mining for several CPU coins, such as Protoshares, Quark etc...

This got me interested in developing a GPU miner for Primecoin, and after spending much time on it, I have done it, I have developed a GPU miner for Primecoin. The performance is about 8-10 times of a similarly priced CPU. My single AMD R9 270 gets 4.5 chains/day, compared to a i7 4770k only 0.6 chains/day

I don't own a GPU mining farm, therefore I'd like to recoup my development time cost by distributing this GPU miner to any interested person, with a cost.

The cost is 1 BTC

The miner binary will be distributed to buyers, but no source will be provided. Also the miner will be IP restricted, so you can't easily distribute to others.

Purchase procedure:
1. send 1 BTC to 1Mh5oXgXwRnd4AMr2wXimKtN4Fp8utiwnh  (you should include your forum id with your transaction if you could)
2. PM me your transaction, please do so immediately after you sent the transaction, so no other person can claim your transaction.
3. with the PM, please give me the external IP address your miners will be mining from, and I will compile a version with this IP address just for you.
4. if you need to change the IP address later, PM me again.

I will open source this GPU miner after 3 months, so you have 3 months to mine exclusively using GPU (along with any other buyer).