List of things that Walt purchased
Considering how much money Walt made, he really didn't spend much of it. Here's a list I compiled of what I remember Walt buying:
1. A new hot-water system
2. More Meth Making chemicals
3. 3 cars
4. A Car-Wash
5. Wheelchair bomb accessories
6. A large Pizza (saved money by ordering it uncut so he could throw on roof)
7. Ricin, or the ingredients to make it
8. Plant: Lily of the Valley
9. A new identity
10. Extra time with his NH supply-guy.
11. Breakfast at Denny's with extra bacon to make "52"
12. 2 Lightpens
13. The gun/robotics that killed him.
Oh and forgot, his most important purchase.... #14: A HAT.
15. (Without Drug Money) Gave Jesse his life-savings of $7000 to buy the RV.
(Jesse spent all but $2000 at the strip club THEN
Jesse gives the $2000 to Combo who says he can get an RV , THEN
Combo steals his Mom's RV and "sells" it to Jesse )
Part of the reason for the short list is that Skyler stole the bag of money early on, though he does quickly gain it back. And then some!