I don't remember anyone complaining about the price of Sennheiser amps. Yes, €1500,- is some money, but I still consider it the best amp I've heard so far for the original T1 (the T1.2 did not catch on with me so far, not sure why... but its mainly gathering dust on my desk between repeated trial sessions).
Yes, its not balanced. Honestly I couldn't care less.
Yes, it does not have crossfeed. I don't miss that either.
Yes, it does not offer a digital input. I do in fact miss that though
What appeals to me besides it clean and dynamic sound is its spacious and well done circuit layout (electrical engineer coming through here), its minimalistic design and well-done aesthetics and its solid build quality. It does look and feel like a premium product and a very competitively priced system when combined with a T1.