Hot take: If you’ve got a team of more than 3, and you can’t afford $50 a month for a tool, you’re doing something wrong.
You're right though, it can add up quickly. Do that 20 times and you're at nearly 10% overhead. It's also a big assumption that the team is salaried. It might be a team of founders, or an open source project.
Ultimately you just need to decide which SaaS solutions are most important to your team.