Thesaurus:expensive

• big-ticket
• costly
• fancy
• dear (UK)
• dispendious (archaic)
• ex (Singapore)
• expenny (slang)
• expensive
• lickpenny (obsolete)
• high-priced
• princely
• out of sight
• pricey
• spendy (US, regional)
• spenno
• spenny (UK, informal)
• steep

• affordable
• attainable
• bargain    [⇒ thesaurus] (as noun adjunct)
• budget (as noun adjunct)
• cheap
• discount (as noun adjunct)
• economical (different from economic)
• econo-
• inexpensive
• jitney (US, archaic)
• low-end
• low-priced
• nickel (attributively)
• value    [⇒ thesaurus] (as noun adjunct)

• eye-watering
• high-end
• luxurious
• plush (chiefly, UK)
• posh (chiefly, UK)
• sumptuous
• unaffordable
• unattainable
• upmarket
• upscale

—

• overpriced
• overvalued

• mid-market
• mid-range
• middle-end
• mid-tier

• an arm and a leg (noun)
• cost-conscious (describes the buyer or their outlook)
• exorbitant    [⇒ thesaurus] (describes the price itself as contrasted with the item)
• exploitive (describes the price itself or the seller, as contrasted with the item)
• no-frills
• give one's eye-teeth (verb)
• give one's left nut (verb)
• give one's right arm (verb)
• frugal    [⇒ thesaurus] (describes the buyer or their outlook)
• good value (noun, usually substantive only)
• inflationary (describes market forces resulting in expensiveness)
• miser    [⇒ thesaurus] (describes the buyer)
• miserly (describes the buyer's outlook)
• pay through the nose (verb)
• priced-off
• price gouging (noun)
• profligate (describes the buyer or their outlook)
• pretty penny (noun)
• spendthrift    [⇒ thesaurus] (describes the buyer)
• thrift (describes the buyer's outlook)
• thrifty (describes the buyer or their outlook)