Napa has this for $4.50. My local Hyundai wants $8.00 a qt.
http://www.eneos.us/product/10

Looks like it's more specific than Maxlife or the other import ATF's for SPIII apps.

APPLICATION

Automobiles with automatic transmissions recommending ATF SP-III, SP-II, & SP-II M.
APPLICABLE VEHICLES

This fluid is commonly used in Hyundai, Kia and Mitsubishi transmission applications.
--------------------------------------------------------------------
This is the closest thing I've found to OEM SPIII at about half the cost.