While this is not the all-time lowest price for this game, this is the best current price. The game will be delisted from the Steam Store on 8 August due to license expiry.
It is uncertain if it will return as Castle of Illusion did (after 7 months).
Therefore, if you ever considered buying this game or it is on your wishlist, then this might be your final chance to get it.
Also available from Steam at $5.73 AUD: https://store.steampowered.com/app/237630/DuckTales_Remaster...
Link to Twitter announcement: https://twitter.com/CapcomUSA_/status/1158797527241695233
About the game: from the Steam page:
DuckTales: Remastered is a beautiful hand-crafted reimagining of one of the most cherished 8-bit titles of all time. Go back to one of the golden ages of gaming, now refined with a level of detail that will please the most hardened devoted Disney or retro Capcom fan alike.
Featuring hand-drawn animated sprites, authentic Disney character voices talent and richly painted level backgrounds from the classic cartoon TV series, Scrooge McDuck and family come to life like never before. The gameplay retains the authenticity of its 8-bit predecessor; simple and fun, with slight modifications to improve gameplay flow and design.
Embark on an authentic DuckTales adventure, as Scrooge McDuck and his three nephews Huey, Dewey and Louie travel to exotic locations throughout the world in their quest to retrieve the five Legendary Treasures.