SpinQ Technology has begun selling quantum computers to everyone.

You can freely buy the 2-qubit Gemini Mini ($8,900) and Gemini ($43,000), as well as the 3-qubit Triangulum ($55,000). Scientists have previously calculated that even to "hack BTC" you need at least 1.9 billion qubits. According to Moore's Law, a quantum computer will be able to hack BTC in 40 years.