To rage buy
When you can't stand something you're using so you buy a better version of it out of rage.
I couldn't stand my old phone, I had to rage buy a new one.
Rage Buy
The act of unhappily and impulsively purchasing a product due to high prices or terrible quality/service. This normally results in taking your unnecessary anger out on either the employee who was assisting you or traffic on the way home.
i had to rage buy a $20 battery and i almost killed someone on my way out of the store
Rage-buy
In general, to display your disapproval of the establishment through purchasing power. Specifically buying bitcoin because the system is rigged.
You: The system is rigged! I rage-buy bitcoin today with my 1-year salary.
Your friend: Nice move.
Your friend: Nice move.