Called and got the same answer as
@cavepig posted above - no prices until registration opens. So then I was like, "okay, well can you tell me when the 5K is happening?" And then I waited for her to click around on runDisney.com and she was like, "unfortunately there is no date listed for the 5K."
So I admit - I got a little rude, and was just like, "are you actually with runDisney, or is this more of a general Guest Services department?" and she said they are NOT runDisney, but they "help" with calls and whatnot. So it's useless to call them, because all they will do is look at the website (when she told me she was looking on the website I was like, "yes, I just looked, there's nothing there.").
And I said, "...I'm sorry, but do you see how ridiculous this is? I realize this isn't your fault, but it's pretty hard to plan things when I don't even know the date that it's happening."
And I was met with silence...long enough that I thought maybe the call was disconnected, so I just said, "well, thanks for your help." And the person WAS on the other end, and she goes, "have a magical day!" I either stunned her into silence or she wasn't trained on how to response to what I said.
I feel bad, because I'm sure they are just staffing this call center with CPs or something, but it's INCREDIBLY frustrating to have next to no information about this. People have taken personal days, booked flights, etc...and these races are expensive. It's a lot of money to set aside. It's just insane what they are doing.