We take cabs every trip.
From AKL to Pop, guestimating, about $12-ish including a tip? I know Movies to AKL was about $9 for us.
From WL or FW to Pop... could be around $22-$24 with tip, perhaps even a little more? That would be including tip. And who knows, could end up being closer to $20.
Last trip we did POFQ to GF - and that was $18 including tip.
Then did GF to ASMovies - $23 it was with tip. ouch!
But for us, sometimes it's worth it. We pack a lot into our schedule and if taking a 10-15 minute cab ride versus an hour plus with transportation and waiting and one resort to park to get bus to our resort... sometimes having that extra time is worth it to us! Also.... we don't rent a car (obviously, if we're taking cabs), and for us to take 2-4 cab rides per trip, we feel it's better than renting a car.
Sometimes we get lazy, like last trip at Epcot - way back in the World Showcase and too lazy to walk all the way up through FW and out to get the bus - so just went right out the internation gateway, couple minutes later were at BC getting a cab!
For WL or FW - I would look into as others have said, taking boat or bus to MK maybe and then to Pop.
Definitely would do the cab AKL to Pop, though.