People rent points for a variety of reasons, but I'm guessing that there may be a lot of renting going on due to current conditions.
Despite the avid nature of those on these boards, I'm sure there are many
DVC members who are simply not comfortable with going to Disney at this time. Add to that the economic problems that may make it difficult for a time. As we all know, if there is a large supply of something, that brings the price down. It goes down even further if demand is decreased, which it is right now.
The fact that they are renting and not selling should make us feel better that the renters are not bailing out on DVC completely, just for the short term.
Of course, there might be some other explanation for the low cost of points. Just throwing in my 2 cents.