noun:
invaluable,
extravagant,
premium,
prohibitory,
dear,
exorbitant,
overpriced,
priceless,
costly,
pricey,
stiff,
inflated,
valuable,
prohibitive,
high,
unreasonable,
expensive,
increased,
ultraexpensive,
spendy,
steep,
high-ticket,
precious,
deluxe,
luxurious.