If you feel comfortable doing it, a gratuitous transfer can easily be done by yourself and save you about $400.
You need to get the paperwork to request a ROFR waiver from Disney.
Once you get the waiver, you draft a warranty or quit claim deed and file the new deed and ROFR waiver with the State of Florida, Orange County (for WDW properties). Once deed and waiver are filed send filed copies to Disney. This costs about $40 or so, depending on your individual circumstances. And it is not too difficult to do.