Just how much do you "haggle?"

[ohliz]

I don't think $10-15 from Nirvana to HiLo, driver waits 20 minutes, and back is unreasonable.

You could wait for a route taxi with space for you on the road and get out near HiLo (but not at the door). After you shop, take your packages out to the road and wait for another to go back. That would be $400J total. But you walk more and you wait more and you share the ride with others. Your choice

Edited to add: HiLo is actually past the roundabout so you'd have to get out at the roundabout and walk to HiLo from there, or pay double to go to what is technically the cliffs ($800J round trip for 2).

$10-15 looks pretty cheap to avoid the inconvenience of all that.