I would consider adding that to the website. It's possible there are people who don't try it because they think its monthly.
Like something that just says one time payment for the whole split.
Now maybe it's there and I missed it. Never know.
This should be clear in the purchase screen (we tried to be very obvious), but we will definitely take another look to make sure!
And definitely agree with the desire for clarity, we want everyone to feel great about their purchase.