at a premium
• scarce and in demand.
• "space was at a premium"
Similar:
scarce,
in great demand,
like gold dust,
hard to come by,
in short supply,
thin on the ground,
few and far between,
not to be had,
rare,
rare/scarce as hen's teeth,
• above the usual or nominal price.
• "touts sell the tickets at a premium"
