big-ticket, costly, dear, expensive, extravagant, high, high-end, high-ticket, precious, premium, priceless, pricey(also pricy), spendy(chiefly Northwest), ultraexpensive

exorbitant, overpriced, prohibitive, sky-high, steep, stiff, unaffordable, uneconomic(or uneconomical), unreasonableinestimable, invaluabledeluxe, luxurious, sumptuous