this last episode spanned 3 months, while the past four seasons spanned the course of a year. hence all the dough. he finally achieved the smooth sailing that he was looking for this whole time, and thats what the cooking montage with todd and lydia putting meth in barrels was about. that was the first time they used a cook to progress time in that way.
and jesse didnt have the gun to kill himself, he had it in his back pocket incase he needed to kill Walt i believe. Walt just killed 10 guys to keep them from talking. If i were Jesse, I'd be afraid that i was number 11.
and Walt doesn't give two fucks about how much money he makes anymore. hes not in the meth business, hes not in the money business, hes in the empire business.