From my personal experience, everyone has heard of Google Shopping. Anyone who googles a specific product sees the conspicuous little boxes with images, prices and vendors of this very product, similar to an online shop, next to or above the regular search results list. However, Google Shopping itself is not an online shop, but an advertising opportunity provided by the market-dominating search engine. And it goes without saying that ambitious shop owners take advantage of this offering to achieve higher click rates.
Hope you find this useful and good luck with your business!