If you are interested in renting points, you should first read the info at the top of this forum. There are
DVC point charts at the top that will tell you how many points are required based on the resort, dates of travel and accommodation size. Points usually rent on this board for around $10 - $12 per point, so that will give you an idea of cost.
Then you should post on the rent/trade board giving as much info as possible such as dates needed, which resort and what room size you are looking for. VWL is one of the smaller resorts and fills up quickly. If you are looking for this summer, you should probably start the process soon. Hope this helps.