Link:
https://www.nanakcarwash.com/
Price:
$4.99
Retailer:
Nanak

 

Nanak monthly unlimited car wash for $4.99/30=$0.16/wash through Nanak car wash app

First-time customer special (express pass) $4.99+tax first month and thereafter $19.99+tax

They have a few locations across GTA and a screenshot from the app is attached for reference

 

Link:
https://www.nanakcarwash.com/