It's free (real estate).
95% consists of useless cars. You don't really need them or will ever use competitively. It's only value is "for the collection". 2006 Mitsubishi Lancer Evolution IX MR is decent on lower levels.

Has no big value whatsoever.

• Sunflower Meadows Player House

You probably want to buy it.

It has 1993 Toyota #1 T100 Baja Truck which is a knows cross-country/rally monster, a decent for starters 2017 Ford GT in S2 class, pretty much decent 1976 Jeep CJ5 Renegade. 1996 Ferrari F50 GT is OK but nothing special.

High value.

It's a 50/50. Half of the cars are useless or viable only in drift. Other half is not as good as probably everyone were anticipating. Overall the pack is good, cars are fun, must have for a collection.

50/50 value. Fun cars but performance ain't top.

• Fortune Island
  
• New Horizon Life objectives
  
  • New Trailblazer PR Stunts
    
  • New Treasure Chest Collectables
    
  • New Horizon Story: Drift Club 2.0
    
  • Cross Country Events
    
  • Drift Zone PR Stunts
    
  • Road Race Events
• Ten cars
  
  • 2018 BMW M5
    
  • 2018 Exomotive Exocet Off-Road
    
  • 2018 Funco Motorsports F9
    
  • 2015 Hoonigan Gymkhana 8 Ford Fiesta ST RX43
    
  • 2002 Koenigsegg CC8S
    
  • 2012 Lamborghini Aventador J
    
  • 2019 Lamborghini Urus
    
  • 1953 Morris Minor Series II Traveler
    
  • 2017 Ram 1500 Rebel TRX Concept
    
  • 2010 Saleen S5S Raptor
• New Horizon Bass Arena song
  
  • The Storm - Notaker

The best expansion. You will definetely have fun with it. Fortune Island is an interesting place with pretty good challenges and "quests". It has some interesting races like route around the mountain or sprint on the entire island. It also has the best drifting route in the entire game, people who do know what Initial D is want to ride there. As a bonus a decent 2017 Ram Rebel TRX Concept cross-country car, also as 2019 Porsche Macan Turbo.

High value.

• LEGO Valley
  
  • LEGO Speed Champions Racetrack (Falcon Speedway)
    
  • LEGO City (Brickchester)
    
  • LEGO Stunt Park (Super Mega Awesome Adventure Stunt Park)
    
  • LEGO Airport
    
  • LEGO UFO crash site
    
  • LEGO Pirate cove
    
  • LEGO Dinosaur dig site
• Player House
  
  • LEGO Master Builder's House
• LEGO Brick Challenge Campaign
  
  • New LEGO Speed Ramps
    
  • New Destruction Challenges
• Five new cars
  
  • 2019 LEGO Speed Champions Bugatti Chiron (since Update 19)
    
  • 1987 LEGO Speed Champions Ferrari F40 Competizione
    
  • 2019 LEGO Speed Champions McLaren Senna
    
  • 1967 LEGO Speed Champions Mini Cooper S Rally
    
  • 1974 LEGO Speed Champions Porsche 911 Turbo 3.0 (Barn Find, since Update 12)
• LEGO character customization
  
• 31 achievements
  
• New radio station
  
  • Radio Awesome
• New songs
  
  • "Cheat Codes" by Nitro Fun (Horizon Bass Arena)
    
  • "Everything Is Awesome (feat. The Lonely Island)" by Tegan and Sara (Radio Awesome's only song)

The worst expansion. You lose nothing if you don't own it. Cars are garbage, land is boring. You have nothing to do there apart from completing "lego quest".

Has no big value whatsoever.

• VIP benefits
  
  • Double credit earnings from races
    
  • Weekly Super Wheelspins
    
  • VIP Emote
    
  • Gamertag crown VIP Crown
• Exclusive content and more
  
  • Three exclusive Forza Edition cars
    
    

    FORZA

    Ford Transit SuperSportVan Forza Edition

    FORZA

    Nissan Titan Warrior Concept Forza Edition

    

    FORZA

    Pagani Zonda R Forza Edition
• Free Player House 'Lake Lodge'
  
• Five Character Customization items
  
  • LEGENDARY VIP Waistcoat (Tops)
    
  • LEGENDARY VIP Suit Jacket (Jackets)
    
  • LEGENDARY VIP Trousers (Legs)
    
  • LEGENDARY VIP Brogues (Feet)
    
  • LEGENDARY VIP Top Hat (Hats)

Questionable. If you plan to play for a long time - you don't actually need it. At some point of your progress you will have tonns of money. Also your main income in the game is Wheelspin and car duplicates. VIP cars are whatever and everything else is cosmetics.
Pagani Zonda R Forza Edition might be a decent car in S2 but S2 class is so packed with no compromise cars that I wouldn't include this car into "significant" list.

Has no big value whatsoever.

• Two Outfits
  
  • LEGENDARY 007 Classic Bond Suit
    
  • LEGENDARY Modern Bond Suit
• Six exclusive Quick Chat phrases

Is useless. Only value is for the collection.

Has no big value whatsoever.

You don't need it. Cars aren't mentionable for the exception of 1991 GYMKHANA 10 Ford Escort Cosworth Group A probably. There are way better off-road cars.

Has no big value whatsoever.

Buy it if you want to compete online. 1932 Ford Roadster Hula Girl, 1959 Atomic Punk Bubble Top are alone worthy of this pack but it has even more brilliant cars.
And since this was brought up, 1963 Shelby Monaco King Cobra is the fastest (no) car in the game, get it.

High value, buy.

Most of the cars are meh for the exception of 2018 Ford GT DD. It's one of the best rally cars.

Idk if you want to buy a whole pack for 1 car.

2005 Honda NSX-R GT is a pretty good road race car, also is a legend. 2003 Honda S2000 ain't bad car for drifting but def not the best. 1974 Honda Civic RS is a fun car in some instances but nothing more.

50/50 value. You decide but I can tell cars in this pack aren't superior

Is whatever, only for the collection. Or maybe you want to drift in a 1929 Mercedes-Benz.

Has no big value whatsoever.

Collection only.

Has no big value whatsoever.

Useless.

Has no big value whatsoever.

• Highlights four collectable types
  
  • Bonus Board locations
    
  • Beauty Spot locations
    
  • Barn Find locations

Idk, do you really struggle to play the game? You can google boards that reduce the cost of "teleportation" around the map anytime. And regular boards doesn't give you anything special but XP.

Has no big value whatsoever.

A free bonus included in the game. At first impression cars in there are sounds and looks OP but in reallity only 2006 #43 Dodge Viper SRT10 is the big mention there and probably it alone will be enough for you to complete every drift event and compete at S1-S2 Drift Adventure. For the best Formula cars you have to grind drift adventure, buy them at the auction or spend Backstage cards. Want to mention that it is not necessary Formula cars are the best for the Drift Adventure.

Also want to note that any of mentioned cars above doesn't mean that YOU MUST HAVE 'EM. These aren't mandatory in any activity multiplayer included. You can win with almost any car in the game. What matters is your passion and skill. Do not dwell on the fact that you don't own any specific car.

This is NOT another "tier list guide" or "best cars in the game BOTTOM TEXT". If you want to know the meta - I think you can easily find the tables on the internet. Or someone has already copy-pasted those lists in Steam.