Not sure what you mean, both NVIDIA and AMD desktop GPUs are available, there is no particular shortage. Prices can be high for top ones, like NVIDIA 4090, but

Not sure what you mean, both NVIDIA and AMD desktop GPUs are available, there is no particular shortage. Prices can be high for top ones, like NVIDIA 4090, but you can buy it. Server GPUs are the ones difficult to buy. People don't really learn CUDA, they use it mostly through another library like PyTorch.