Florida in December

hi, my daughter is pestering us to go to Florida when we go on holiday in December, we have visited a couple of travel agents and looked online but were staggered by the cost. thought I had it sorted when we realised a family friend had a villa in Orlando but have since found out he's sold it!!

we want to do both Disney and universal and im happy to do the driving. any suggestions of sites they have used??

thanks in advance.