It was long considered rare to find boats for sale at an affordable price. Sailboats for sale where then enjoyed only by the well off ones who had the financial means to buy them. Today any average Joe can find a yacht for sale in his price range. The boats production has increased dramatically over the last few years. As a result yacht brokers now face a weaker demand with a very large supply. The law of the market implies that prices go down. So sailing a yacht is no more the privilege of the smart set.
Obviously even if you find a honest yacht broker you will have to give up a part of your savings to get a boat.
Now the most difficult decision you will have to make will be the choice of the boat. If you like sail boats you will have access to a large selection of models, old and new. If you prefer a motor yacht, then you can easily make your dream come true, although you will have to check its technical specificities before you purchase one.
If you are unlucky and none of these solutions is cheap enough for you then you can still ask a yacht charter and rent a boat. It will not be yours but at least you can change your boats for each travel you are going to be planning.