低价 dījià low price

How to remember 低价: 低 low + 价 price = low price.

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低价 (dījià) means 'low price' and is typically used attributively or as an adverbial before a verb: 低价出售 (dījià chūshòu) - to sell at a low price; 低价商品 (dījià shāngpǐn) - low-priced goods.
It's more of a fixed commercial/marketing term than a full sentence predicate - to say 'the price is low' as a standalone statement, use 价钱很低 or 价格低, not 这个东西低价.
Common in advertising and retail contexts, often paired with 促销 (cùxiāo, promotion) or 折扣 (zhékòu, discount).