I don't know how MVC manages seasons, but it's also the case that if you book say McAlpin in club reservation window, you can use any points, so that also affects what you're paying to stay. I.e. in December leading to Christmas McAlpin was 8,000 instead of 11,200pts. MVC owned weeks would be an II exchange, but that takes the whole week. With my Sea World deed, including whole club dues cause I don't yet have another deed - I get 11,200 pts, but only had to "spend" 8,000 for that December week. I expect Abound would vary with season maybe, but I'm almost certain the deeded weeks don't for MFs. In that case, you're either paying the entire $1,576.23 vs ~72% of the HGVC deed OR you're comparing whatever the points discount for seasons is, but starting from a seemingly much higher number.
EDIT: Of course, I got a platinum deed. I guess if you had a gold deed with HGVC that wouldn't be true. So I guess maybe my whole idea is out the window lol.