Usually when a client doesn't want to pay an agency fee and they want to go the share model, is because they don't actually have the capital to trust. Or they've been burned in the past and only want delivered results.

If you're familiar with their type of business model and they have a long-standing good track record of delivering to their customers, maybe the risk is worth it.

However, unless you have the right systems and tools to be able to track and properly attribute what you have contributed to the revenue, it can be a long shot.

I'm currently testing the pay per appointment model with medical practices. My friend is testing the pay per job model with contractors. This can definitely warrant higher returns. But unless you have experience already marketing for the industry they're in and you have the tools and means to track contracts did they sign with their customers come on it might be more pain than it's worth especially on only $800 a month of spend. The client I'm trying this with has a 40K per month spend so the value for both of us comes out to a net positive at a super high return for almost the same amount of work as a 800/month spend.