So lets start with the tools you don't have to buy separately.
Bolt roller greaser 6.75
Throat erosion gauge 62.5
Muzzle erosion gauge 34.95
Flash suppressor alignment gauge 69.95
Stock liner tool 14.95
Right there is $190US. Now list the tools that this replaces which you may have lying around your shop, but are now packed into one small tool. This list is taken directly from the website and each of these is a designed function of the tool.
1. Trigger Guard Take Down Tool
5. Trigger Group Take-Down/Disassembly Tool
6. Extractor Removal Push Tool
7. Extractor Claw Cleaner/Scraper
8. 3/8" Hex Socket / Gas Nut Wrench
10. ¼" Hex Socket for Standard Drive Bits (User To Supply Bits)
11. Gas Piston Holder
12. Rear Sight Screw Driver w/ Torque Handle
13. Butt stock Screw Tool
14. Spindle Valve Tool
15. Magazine Floor Plate Puller/Disassembly Tool
16. Butt stock Trap Door Tool
17. Grease Stick/Reach Tool for Water Tight Dry Storage Container
18. Grease Stick for Grease Pot
19. Bolt Face Carbon Scraper
20. Gas Piston Groove Cleaner
21. Connector Lock Pin Tool
22. Rear Sight Spring/Cover Tool
23. Hand guard Removal Tool
25. Grease Storage Pot
29. Water Tight Dry Storage ContainerN
30. Butt stock Storage Tool Configuration
31. Tool Pouch Storage Configuration
No more digging around in your toolbox for the "right" tool to do a job. A total of $50 for the pouch and all the tool functions I listed. I think it's worth it. You don't have to if you don't want to.