There are many advantages to the MetLife Guaranteed Income Builder. This deferred income annuity (DIA) is flexible to fit my needs. One of the things I liked about it most was that I could get out of the contract and get back at least 92% of what I paid to purchase the annuity before I started taking payments. I could also change my income start date if I changed my mind, and split my money into two different streams if I wanted. I was able to get into this DIA for only $2,500, and I can add as little as $500 at a time, so the investments are definitely doable.