Can you buy GPU online?

Good day, fellow crypto enthusiasts. I'm curious about something related to our beloved field of cryptocurrency mining. With the increasing demand for mining power, I've been wondering if it's possible to buy Graphics Processing Units (GPUs) online. Could you elaborate on the feasibility of this? Are there reliable platforms or websites that offer GPUs specifically for mining? What are the key factors I should consider before making such a purchase? I'm also interested in knowing if there are any legal restrictions or compliance measures I should be aware of when acquiring GPUs for mining purposes. Your insights would be greatly appreciated.