Hello, let's get started. You can stand in front of two paintings of similar size and quality and find one priced at $800 and the other at $80 million.

The gap rarely comes down to how hard the artist worked. It comes from a mix of factors that buyers, dealers, and auction houses weigh every time a work changes hands.

Skill sets the floor, not the ceiling

Craft matters, but it's the baseline, not the finish line. A technically flawless academic portrait from the 1800s might sell for a few thousand dollars, while a rough, nearly abstract sketch by Cy Twombly can clear tens of millions. Buyers assume competence; what they pay a premium for is something rarer. Think of it as the entry ticket, not the prize.

Age only helps when it's scarce

Old doesn't automatically mean valuable. Plenty of 17th-century canvases sit unsold because thousands of similar ones survive. Rarity is what does the work. A late Rembrandt portrait is worth vastly more than a routine studio copy from the same decade, and a single surviving sketch by a lost Renaissance hand can outperform both. Condition matters here too: a cracked, over-restored panel loses value fast, while a well-preserved one holds its value.

The name carries the weight

Provenance and reputation do a lot of the lifting. A painting attributed to Vermeer is worth a fortune; the same canvas downgraded to "circle of Vermeer" can drop by a factor of a hundred. The 2017 sale of Leonardo's Salvator Mundi for $450 million had as much to do with the attribution debate around it as with the paint itself. Collectors are buying a name they can insure, exhibit, and resell.

Demand decides the final number

Here's where the market really moves. Two motivated bidders at Christie's can push a work far past its estimate, while the same piece at a quiet sale might struggle. Auction records for Jean-Michel Basquiat climbed past $110 million largely because a small group of buyers wanted him at the same moment. Taste shifts, too: Victorian narrative painting fell out of favor for decades before collectors circled back.

Break it down, and the price is a negotiation between story and scarcity. A mid-career artist with a gallery behind them, a clean exhibition history, and steady demand will command more than a talented unknown with none of that. If you're buying, ask what's driving the number: the hand, the history, or the hype. Most of the time it's a blend, and knowing which part dominates tells you whether the price will hold.