noun
selling point; strong suit; strength
Colloquial term for a product's or person's key attractive feature or advantage.
この車の売りどころは燃費の良さだ。
The selling point of this car is its good fuel economy.
彼の売りどころは、どんな状況でも冷静でいられることだ。
His strong suit is that he can stay calm in any situation.
noun
selling area; counter; place to sell goods
Rare literal meaning: a physical location where goods are sold.
市場の中でも、あの一角が一番の売りどころだ。
Even within the market, that corner is the best selling area.
noun
good place to sell; favorable selling opportunity
Rare sense referring to a market or timing that is advantageous for selling.
今がこの商品の売りどころだ。
Now is a favorable selling opportunity for this product.
売り means 'selling' or 'sales', while 売りどころ specifically refers to a selling point or strong suit.
長所 is a general term for 'strong point' or 'merit', whereas 売りどころ is more colloquial and often used in marketing or self-promotion.
Compound of 売り (uri, 'selling') + どころ (dokoro, 'point' or 'place'). The exact historical derivation is uncertain, but the term likely emerged in commercial contexts to mean 'selling point'.