Amazon has Funkoverse Strategy Game: Harry Potter #101 – Expandalone on sale for $10.74. Shipping is free with Prime or on $25+ orders.
Lowest price according to camelcamelcamel
The set is great to replace the "basic tokens" from the base set, if you only have the base set (either the Harry Potter or the Batman one). Alternatively, you can play the Expandalone by itself as well.