If a product can be used for work, it makes a lot of sense to do discounted pricing. This gives a company an incentive to buy it for their whole team, which is great – you earn more without doing more work.

I think it also helps with anchoring. If they only had one pricing plan for $25, you'd be like "Wow this is really expensive!" But when you put $25 next to $199, it suddenly looks like a steal!

I don't think it's absolutely necessary though. I've seen a lot of companies do fine without it. You might want to launch with a single plan and then introduce this pricing if people start asking you for it.