For four bookings a year you don't need a channel manager, and dynamic pricing tools are built around nightly rate curves that don't apply when you're quoting a monthly figure. Most mid-term operators run a much lighter stack than nightly hosts.
What people actually pay for tends to be three kinds of thing. Listing exposure, which is usually an annual subscription on a site built for traveling healthcare housing, commonly in the low hundreds of dollars a year per property rather than per month. General rental sites and the big nightly platforms with a 30 day minimum set also produce leads, and the nightly platforms take a percentage of booking rather than a subscription. Second, a property management or lease platform to handle the lease document, rent collection and maintenance requests, which for a handful of units often runs free to about $20 a unit a month, sometimes with a fee on card payments. Third, a smart lock so you're not driving keys across town for a 60 day tenant, which is hardware in the $150 to $300 range and no ongoing cost unless you buy into a hosted access system.
Then there's labor rather than software. Cleaning between stays, and someone to do a walkthrough and inventory check.
The part that catches people running this as a service for owners is that arranging tenancies for compensation can trigger real estate licensing requirements, and where that line sits depends entirely on your state. Worth confirming with your state commission before you take a management fee, because the answer changes what you can charge for and how.
