@tamu-bu yes you are correct, anyone who has access to Abound can rent in Club points up to 20,000points per year and often at or less than the cost of maint fees for Trust points.
As dioxide says, if buying for ongoing use is the aim, then there are several avenues, including buying a good Vistana week resale and retroing it as well as buying Vistana inventory direct.
If club points are the end game, then there are also the choices of buying a non-US week direct from MVC that is enrolled, buying a bundle of a week and trust points from MVC direct that are enrolled or buying resale Club points and paying the initiation fee ($3/club point min $3k) to enrol them. All of which can be cheaper than buying Trust points direct from MVC.