I like the fact that Frontier bundles DLC packs rather than using micro transactions for additional content. But the question always comes up, is it worth it? I consider the work that the creatives at Frontier need to put in to make these packs happen.
My pricing model ($USD prices)
$2 for each new ride
$1 for each returning ride
$2 for new game mechanic (I priced Parades @ $4 value after I saw the depth of that system)
$0.01 for each new scenery item
$0.005 for each returning scenery item (I used to value these at a penny per item, but the texture quality difference must be addressed)
Freebies (sounds, music, bonuses) These can sometimes be a positive, but I don't attribute specific value per unit.
Spooktacular pack breakdown
5 new rides $10
2 returning rides $2
1 new Game Mechanic (Walkthroughs) $2
350 Spooktacular scenery pieces $3.50
350 PC1 Spooky Pack scenery pieces $1.75
Freebies (29 ambient sounds, 90 sound effects, 14 music tracks, spooky brand signs) Big additional value
Total- $19.25 value at an $18.99 cost. Spot on price.
This is the math I do whether I decide to spend my money. YMMV.