Most of the information we've heard here on TUG from more trustworthy sources (i.e. - not coming from a sales person's mouth) is that the weeks Marriott acquires through ROFR go directly into the MVC Trust to provide cheaply-acquired points to sell (cheaper than building new resorts), and are not resold (possible exceptions are Aruba, St Kitts, and Europe weeks, since those can't be put in the Trust, and thus must be resold). Every bundle I've been offered or heard of others being offered are true resale weeks where Marriott is operating as the broker between buyer and seller. The one bundle we bought was such a transaction, and the transaction was between us and a Seller from Ohio, with Marriott as the broker.
If you think about it from a business standpoint, if Marriott can acquire a week via ROFR for a price that equates to $1-$3 per point for the point value of that week, and then can sell those points for $11-$14 per point, they can make a heck of a lot more money than selling that as a week. Using your $10,900 Platinum 2BR Grande Vista as an example, that week is worth 2775 points. If they can exercise ROFR at, let's say, $1000 to $3000 (prices that have failed ROFR on rofr.net), their cost for those 2775 points would be around $1 per point or less. But they can resell them for a discounted price of around $11-$12 per point, or $30,000 to $33,000. So, they can earn three times the revenue they would earn by reselling the reacquired week for $10,900.