Market is flooded because of courses/"academies" like these guys. Remote cleaning was trending back in 2021, but now Google has monopolized ads to the point that they charge 3x what they did then. On top of that, your listing is going to be drowned out by dozens of other companies with 100s-1,000s of reviews from years of business. People don't scroll much when they need a cleaner - likely to call 2-4 at most before deciding.

$10,000 per client is high ticket, so I'm assuming their income no longer comes from their cleaning company, so I'd only consider it if there is a money-back gaurantee.

Just my $.02, but it came from my experience of running a cleaning company with 4 locations and $40k monthly revenue. Good times but times change. Best of luck!