I just listened to "Aja" two days ago and it was absolutely miles ahead of all previous versions I've experienced. On top of that I had recently purchased the Dan's 3 previously released UHQR LP's and they are equally amazing. I could not recommend them more strongly. Obviously, $150 is a significant expenditure for an album most of us already own, in many cases, in multiple formats. That being said, these were supremely satisfying listening experiences and well worth the cost.
If you have a truly high-end system, you CAN buy a thrill!