According to Whirlpool forums (via Reddit) GTA V on PS5 is available as a preorder for $14.99
Taken from a Whirlpool forums user:
GTA V PS5 version (including story and online) coming up on the Aus ps store as a preorder for $14.99. It says it’s an introductory price and standard price is AU $59.95. I can’t find it on the web store but if you go to the store on your ps5 and go to the preorder section it is in there. Wondering if it’s a price error as another article suggests it’s meant to be 50% off in this introductory period. Which would mean it should be $30. For $15 I’m going to grab it now. Basically what it should have been as an upgrade fee.
Edit: definitely think it’s a pricing error or to do with the fact gta online is going to be free on ps plus for a few months. As it’s coming up for preorder on my Xbox for $29.97 down from $59.95.
I haven't tried to buy it yet so let me know if it doesn't work but I will be trying when I get home shortly.