Worth using a travel agent?

We're planning a trip to WDW in October. Is using a travel agent worth it? We'll be able to use miles to help pay for our flights so it isn't worth using Costco which is what we originally had looked at. I briefly spoke with an agent in my area yesterday and then today asked what the benefits of using them vs Costco is (before we figured out we had enough points for flights) and haven't heard back. So just wondering in general, pros? Cons?