FWIW, you can get a good used one at a yard. Here's a few I found in CA for you. They usually ship cheap.
These prices are a rebuild kit price almost.

Quote
1994
Power Steering Pump
Toyota Truck MT 5SPD,2.4L T10279 $35 Rancho Toyota Truck & SUV Recycling USA-CA(Rancho-Cordova) E-mail 877-551-5575 / 916-631-7777
1990
Power Steering Pump
Toyota 4Runner MT,4CYL C T09237 $35 Rancho Toyota Truck & SUV Recycling USA-CA(Rancho-Cordova) E-mail 877-551-5575 / 916-631-7777
1993
Power Steering Pump
Toyota Pickup/Stout 4X2, 4 Cyl- 15410 $35 Chuck's Truck and Auto Dismantler, Inc. USA-CA(San-Bernardino) Request_Quote 909-888-4811 Request_Insurance_Quote

1989
Power Steering Pump
Toyota Truck READY TO GO $30 Capitol Imports Auto Dismantling USA-CA(Sacramento) Request_Quote 800-259-5529 / 916-366-7470 Request_Insurance_Quote


85 4Runner - With NEW Marlin 4.7 Gears!! It's a whole new beast!