At most VI resorts 105 points will give you 1 week / 
year - at high season - in a one bedroom unit.  That is 15 points a night.  Mid-season 
takes 13 points and low season 11 points.  2 bedroom units cost 18.5 points a night 
for high season, 16 for mid-season and 13.5 for low season.  So 130 points is 
the most popular 
ownership range for a two bedroom at high season.
Furthermore, any of the contracts I own can be split to bring the owners points up to a level that is best for the buyer. For example, if a prospective buyer had 77 points bought from the company ... they might want to buy another 28 points to get to where they can use a one bedroom unit, or else buy 53 more points to go to a two bedroom unit at high season.
VI owners can join RCI or Dial an Exchange to trade points, and travel to resorts all over the world. So, VI points owners are not limited to just VI resorts.
The exchange system is regarded as the life blood of timeshare - providing an increase in the choice of places to visit and times to take a holiday.
The principle is that you deposit the week that you own, just for one year, into a "bank" with the exchange company and take out of that bank another week, in another resort, worldwide. There is potentially a great degree of flexibility in the system - you can bank a June week in a resort in England and take out of the bank a March week in a resort in another part of the world, in another year.
- SFX - San Francisco Exchange - www.SFX-resorts.com
- DAE - Dial an Exchange - www.daelive.com
- TPI - Trading places International - www.tradingplaces.com
- HTSE - Hawaiian Timeshare Exchange - www.htse.net
- RCI - Resorts Condominiums International - www.RCI.com
- Interval International "II" - www.intervalworld.com
RCI: www.rci.com
RCI is the largest exchange company in the world, with a UK base 
		in Kettering, Northamptonshire, England.
		RCI require members to deposit a week in their bank before offering an 
		exchange and generally only offer a week/resort of similar or lesser 
		trading power than that banked. They charge an annual membership fees 
		(with discounts for longer periods) plus an exchange fee.  RCI has been 
		increasingly criticized for their failure to provide a good choice of 
		exchanges or even, in some cases, any choice whatsoever. 
		To become a member of RCI you must own a week in one of its affiliated 
		resorts. 
		RCI also has 2 "Points" systems notionally independent of their 
		"weeks" system, as well as numerous sister companies offering rental of 
		holiday accommodation
 
		Dial an Exchange (DaE): 
		www.dialanexchange.com
		
		 is the largest and most internationally 
		established of the independent exchange companies, with offices in the 
		UK (Yorkshire) , Australia, New Zealand, the US, South Africa, and 
		China.  DaE offers free membership, or a (cheap) premium membership with 
		a few extra perks.  Any timeshare owner can became a member of DaE 
		because it does not affiliate resorts. 
		In the DAE system "a week is a week" regardless of season or size, so 
		there is no calculation of trading power.
		
		United Kingdom Resort Exchange (UKRE):  
		www.ukre.co.uk  
		UKRE is an independent exchange 
		company - based in Scotland - that handles exchanges between resorts in 
		the British Isles.
		Any timeshare owner can become a member of UKRE as it does not operate 
		an affiliation system. Membership fees are lower than those of RCI and 
		II and UKRE operate a "like for like" exchange policy but offers the 
		opportunity to upgrade for payment of a modest fee.