What are some alternatives?
When comparing Retrowave Illustration Pack and Marketing Inspo, you can also consider the following products
Stubborn Illustrations - 30 little exciting stories from the startup world
SaaSFrame - Browse hundreds of SaaS marketing pages, product interfaces and email flows.
Stories by Freepik - Awesome illustrations for your next project
Illustration Tools - Directory of tools and resources for illustrators
Atlassian Design - Design, develop, and deliver
Blush - Illustrations for everyone