Ive posted this a dozen times but it’s been really worth it to me to save money on parts.
I get my Toyota SLL for $15/gal at Maita Toyota in Sacramento. I make an order and pick it up when passing through. Most dealers won’t ship fluids.
Use the Toyota parts website to find a better price at a dealer near you.
00272SLLC2 - Toyota 50/50 Pre-Diluted Super Long Life
Antifreeze/Coolant - Genuine Toyota Part
Also, check with your local municipality but some places allow for pouring coolant down your regular sewer system.