As of my last knowledge update in August 2023, I can provide you with information about some popular SEM (Search Engine Marketing) tools that were known for offering good deals or value for money.
Google Ads is one of the most widely used SEM platforms. They often provide promotional credits to new advertisers, which can be a great deal to kickstart your campaigns.
SEMrush is a comprehensive digital marketing tool that offers features for keyword research, competitor analysis, site auditing, and more.
Similar to Google Ads, Microsoft Advertising offers new advertisers promotional credits to get started with their platform.
WordStream offers tools for managing and optimizing Google Ads and Microsoft Advertising campaigns.
Ubersuggest, created by Neil Patel, offers features for keyword research, site audit, and competitive analysis.