When you tell friends and family you're going to buy or sell your Bahamas home, and they ask, "Why are you working through a real estate agent when you can just use the internet," how will you respond?
Your first answer should be that you need to have a Bahamas real estate agent handle all the paperwork – arrange for appraisals, inspection reports, need someone to take care of your legal work (unless you have your own lawyer)... they'll get the picture.
You could describe your Bahamas Real Estate agent's knowledge about the particular area – zoning (if necessary), property values, etc.. You want to know that the location of your potential Bahamas home will hold resale value for the future and that there are no unexpected nuisances that could arise (a potential change of zoning of nearby properties, for example).
Tell them there's more to advertising than print media and websites, and that your Bahamas real estate agent will be more likely to find a buyer instead through their relationships with other agents and past and current clients. Not to mention the fact that you don't want complete strangers visiting your home and you're more comfortable knowing that your agent should have screened and qualified potential purchasers (this is not always possible, unfortunately).
And once you're on either side of an offer, you trust your Bahamas real estate agent's professional's ability to negotiate successfully on your behalf.
Your final argument might be that most people may buy or sell a handful of homes in their lifetime, but your agent has been successful on numerous occasions, on both sides of the transaction. Case closed!