Buying direct cost you about 900% more than resale. -edited
Resale is about 80-90% of the developer price. So, you can buy about 9 times the points resale for the same initial cost. MFs are the same, so 9x the points will cost you about 9x the annual carrying costs.
As HuskerATL says, low MF can really make a difference when you have 10-12 weeks of shares. Say 20-50%, so it does add up.
My point is if you have a week or two it could be a couple hundred dollars a year. To some this is meaningful and to others they want the nicer 2-bedroom or 3-bedroom unit with the decent MFs that can be hard to get. You still must play the reserve 12 months out game and walking the reservation games, but the Forum has posts on that.
The biggest frustration for resale to me has been the couple of months for all the paperwork to be completed. It literally feels like the process freezes for weeks at a time with no progress. There does seem to be a reasonable number of protections for the relatively small purchase price.
Advice, go in expecting 3 months, maybe even 4 months, is what I recommend, but checking to be sure everyone has what they need from us.