Obviously $600 was far too much for this collector's edition, $300 is much more reasonable - still high, but if you're a hardcore fan this one might be worth jumping on.
Looks like a bunch of stores have it in stock too, so you wouldn't be forced to only get delivered (I only checked VIC stores, but there was a pretty high number of locations)
Street Fighter 6 Collector's Edition includes:
Mad Gear Box, containing:
Street Fighter 6 full game in Steelbook® packaging
POP UP PARADE Figures Luke & Kimberly
Artbook
Sticker Set
Figure Diorama Boards
Digital Content:
4x additional characters
4 additional characters' colours: Outfit 1 Colours 3-10
4 additional characters' colours: Outfit 2 (including colours 1-10)
4 additional characters' colours: Outfit 3 (including colours 1-10)
2 Additional stages
Purchase Bonus: 7,700 drive tickets
From what I hear, the game is also really solid, so that's of course a bonus haha
I can assure you Street fighter collectors editions don't hold value.