If you have extra points, you could bank them into your next use year, but there are banking deadlines which escape me right now. If you wanted to, you could rent them out on the rent/trade board, but I am not sure how well just 3 points would do. You can not "buy" more points from DCV to just use this use year. If you bought more, you would pay full price and get usage every year. You could also rent the points you needed from another member and ask that the points be transferred to your account for use. You could also do the opposite and rent points from another member but transfer your 3 points to them and have them make a reservation for you.