Properties
Description Cheapest Available Value GTA$
Executive Office Maze Bank West $1,000,000
Gunrunning Bunker Paleto Forest $1,165,000
Counterfeit Cash Factory Grand Senora Desert $845,000
Biker Clubhouse Great Chapparal $200,000
Apartment (low-end 2-car) 1561 San Vitus St $99,000
10 Car Garage 1337 Exceptionalists Way $112,500
Subtotal Value $3,421,500

Vehicles
Dune FAV $1,130,500
Maibatsu Frogger $1,300,000
Enus Windsor $845,000
Obey Omnis $701,000
Coquette Classic $665,000
Grotti Turismo R $500,000
Pegassi Vortex $356,000
Enus Huntley S $195,000
Western Zombie Chopper $122,000
Bravado Banshee $105,000
Subtotal Value $5,919,500

Weapons and more
Compact Grenade Launcher $45,000
Marksman Rifle $15,750
Compact Rifle $14,650
31 outfits and 61 tattoos
Racing Suits[2]
Biker Suits[3]
Stuntman Suits[4]
Import/Export outfits[5]
Biker tattoos[6]
$2,628,985
Subtotal Value $2,704,385

Final stats:
>Total Asset Value == $12,045,385
>Total Value including Cash Bonus == $13,045,385
>Is it worth buying ? - If your starting out and money to buy it then it is, but for those who are playing gta 1 month or more its defenetly not worth buying...

* took the table from GTA Wiki.