The rules were changed a few months back when you could buy an unlimited number of points (in lots of 99,000) from Marriott for $10.00 per 1000 pts, but it was quickly closed down when other departments complained to Marriott brass. Now it's $12.50 per 1000 points and you can only purchase up to 50,000 points per calendar year for yourself to make up the difference between the number of points you have and the number you need for a reward, as long as it's under 50k. You can purchase
or gift these points. That seems to indicate that 110k points are valued by MAR at $1375.
https://buy.points.com/marriott/init.do?method=buy
To earn 110,000 points, not considering Elite bonuses and/or VISA earnings, you'd have to spend $11,000 in Marriott hotels. Or for about $1000, depending on the timeshare, you could give up your week for that many points. Only you can decide if that's a good enough deal for you. IMO once a week MF plus $104 fee gets to more than $1000 it's not worth it...but at any rate you need more than 1 week.
I take a trip EOY to some expensive Marriott and get business class air. EOY I trade in 540,000 pts for 2 Cat7 air&hotel pkgs which provides 2 weeks in hotels and more FF miles than I need for that trip. I have 6 Marriotts and trade 2 in each year for points - in my case 220,000 points a year ... or 440,000 over a 2 year period to replace points I've spent on travel over that period. To get the additional 100,000 pts over 2 years is quite easy, in my case, with hotel stays, bonus points, etc.
If NCV changed the amt of points one could exchange for and allowed it EY for the new purchasers, it is only because Marriott wanted those weeks for rental demand. The original purchasers didn't receive the change, but they did buy their weeks for $19,000 and got a few hundred thousand incentive points when they did. So I guess it's somewhat relative. Now the weeks are $35,000 or so, no incentive points, and the points are worth less. The early bird ...
Today, I wouldn't buy a week for exchanging for points. In 2001 and 2002 I bought MCV and MSE for less than $19,000 ea and got more than 500,000 points each ... 1 million points for $38,000. They both only allow EOY trading for points. The MF back then was about $600 a year. Times have changed for new purchasers and I don't see any sign that it will get better over time.
Still, I'm sold on points and my system works for me for now.
Brian