Moved here from the Rent/Transfer Board, as the rental board is limited to specific Rental/Transfer transactions, and is not a general discussion board.
To try to address your question...
It will vary greatly upon each owners financial situation, what they paid for their points intitially, and whether they continue to travel to Disney on a semi-regular basis. Also remember that
DVC Point contracts can not be split. For instance, say you have 500 points, you can not sell 200 points and keep 300 points.
First off, I have no intention of selling. And I did rent about 100 points out last year, which was the first time I ever had the extra points I wasn't using. Personally, I paid an average of $53.50 for my 345 points 32 years ago. I've more than gotten my moneys worth at that buy in price. I have 4 contracts, 230 points, two 40 point contracts, and a 35 point contract. That number of points gives me the flexability I desire to travel solo or take friends on large group trips every few years. I could sell them for a decent profit, or I could rent 1/2 of them and pay all the annual dues on the contract, and still continue to travel to WDW using my room. I'm single, But if I sell, there is no way I could continue to afford going to Disney twice a year, or take a large group of friends. I've taken two large group trips, one of 16 people and one of 11 people. Sometimes I travel solo, but usually a take a friend or two with me. I still very much enjoy Disney, and I purchase the Sorcerer Level annual pass. If I need to cut travel expenses on a trip, I simply eat meals in the room, and only buy a couple snacks in the parks, Given the cost of motels along the way, it is cheaper for me to fly to Disney on solo trips, than to drive. I drove straight thru once, years ago, just napping in a rest area, but I'm getting too old to do that now. If I take a group, we will still often drive, as it does cut costs.
If you have several small contracts, you can always sell off the smaller contracts, and still keep enough in a larger contract for your own Disney travel needs.
There is a lot of factors in deciding to Rent or Sell. My personal advice, while you're trying to decide, would be to rent, and see if that works out for your needs. If not, you can always sell, after your renters have completed their trips, of course, so they aren't cancelled.
Good luck with your decision.
Please do not give specifics of your contracts on the DISBoards, for if you do decide to sell, it could be interpreted as soliciting a sale, and we do not allow that on the boards.