I don't think 'common sense' is at play here
Common sense would dictate it could not be a yearly MF, so it is not misleading
Granted, all of us TUGGERS know that the fee seems too low to be annual so our common sense says it's not annual. However, someone who doesn't know any better (new to what and how timeshares work) might take it as written.
Mixing a stated usage point value with a stated m/f sorta implies to me that both are using the same measuring stick (annual or monthly?). I hope there is no intentional misdirection here. Hopefully any bidders will clarify with the seller. Hope the SELLER knows to state what seems obvious to us - at least when asked.
Ebay is a huge marketplace and MANY people with all different levels of knowledge go there to shop. I'm currently in the market for a tankless water heater and the 'technical stuff' listed in some of the listings is confusing to me but to someone who knows this stuff it's obvious. Same goes for most things.