Taxi fare for Mears (City cab, Checker cab and Yellow cab- they are Orange-go figure) is $2.20 for the first 1/4 mile and .55 each additional 1/4 mile.
Mears City cab is the "official" taxi service so they do not get charged for ehtering a park thru a toll booth.
If you opt for some other company, some charge the same but some charge based on 1/9 or 1/10 of a mile. These gypsy cabs often have an unofficial connection in the resort to get called when a guest is looking for a ride.
IMHO, for your protection, only use a Mears cab. You won't get taken for a $50 cab ride from DTD to the All Stars.