I am glad that you pay attention to the quality when you want to buy some music. But what exactly is "High Resolution Audio" ?
Here is the explanation : When I compose music, I create very high resolution audio tracks that I mix and arrange so I print my own vision on it. Until the album is finished, the music is (hopefully) still in a super high resolution. This is the best way to enjoy my work if you have the chance to listen to it on a good audio system.
However, because high resolution means a heavy format, the music you usually buy from the digital stores is a compressed format such as MP3, AAC, etc. It is not necessarily a bad thing since you save loads of space, and the vast majority of audio devices nowadays can read those popular formats.
So why all the fuss about high quality audio then ? Well, first because when you come to buy music, you would expect to receive the best format available, right ? And secondly, if you are the lucky owner of some good headphones or home theater system, you may be able to experience a better result with high quality files.
The loss involved in the compression process usually occurs on the dynamic range (transients), the stereo image and the frequencies that an average person would not notice missing. It may not be much, but all together it makes a difference.
The only place where you can buy it is through my bandcamp page. Bandcamp allows you to choose the format before proceeding to download. If you select "WAV" or "AIF", then you will have 24Bits/96kHz files, and for the same price than the compressed version.