Amazon and Walmart usually battle for the lowest price.
The best spot for finding retired or specific "Slime Rods" from older collections.
These use a liquid/slime mixture to unveil the car's paint. hot wheels slime where to buy
I can find specific links and current prices once you let me know!
Check the toy aisle near the Monster Trucks; they often have exclusive sets. Amazon and Walmart usually battle for the lowest price
Ensure the slime is included, as some "slime-themed" cars are just painted to look messy.
Apps like Facebook Marketplace often have "bulk" lots of these for cheap. To help you find the exact set you're after: Do you prefer the vintage 90s Slime Rods ? What is your budget range ? hot wheels slime where to buy
These packs often include a small container of slime.