Also 29.99 for new PS4 copy on Amazon with ps5 upgrade:

https://www.amazon.com/Sackboy-Big-Adventure-PlayStation-4/dp/B08JHQ4NBB/ref=sr_1_2?dchild=1&keywords=sackboy+ps4&qid=1624278106&sr=8-2

Edit: ps5 version $29.99 on amazon too as of now

You got Options for $30!

PS4 version can probably be resold easier and get it quicker with fast internet vs dumping off the disc to SSD but the ps5 label just looks nice in the collection or if internet is slow/capped

I would re buy but I am waiting for even lower or maybe even free after a playthrough + resell months ago. Still, tempting at times