What makes a luxury domain valuable?
Brevity and register. A premium name has to survive being embossed, set in a small serif on a card, and read out in a room where nobody wants to hear a pun. That rules out most compounds and nearly all invented spellings.
Headroom is the second factor, and it is why holding-company style names trade highest. HighOmni.com and SwissOmni.com use an omni root that describes scope without naming a product, which is what a group brand needs. HighSovereign.com reaches further still, into state-aligned capital and infrastructure.
Ultra-short marks are their own asset class. 1A.bot, 8A.bot and B8.bot are two-character names — the scarcest string length that still exists at obtainable prices, and the eight carries additional resonance in Asia-Pacific markets.