Which of the following is not true about search advertising:

Search advertising traffic is not always the cheapest. While it can be highly effective due to its intent-based nature, the cost per click (CPC) in competitive industries can be very high. Factors like keyword competition, bid strategies, and Quality Score significantly influence CPC. Other advertising channels, such as display advertising or social media ads, can sometimes offer lower CPCs, especially when targeting broader audiences or using less competitive keywords, though their conversion rates might differ. The other statements are true: the number of users actively searching for a specific offer is inherently limited by demand, and search advertising directly responds to a user's immediate need or query.