Theoretically, the Nvidia GeForce RTX 3090 Ti is on sale now, and available to retailers. In reality, the demand for top end GPUs is such that this most recent graphics card is selling out fast (if not already sold out). However, Nvidia will have known that the demand will be insane, and so stock will be drop fed to retailers around the world. That's why if you don't see anything right now on the links above, we strongly advise you come back and see if they've restocked. Unfortunately there's no hard and fast timing on these things, but it certainly looks like stock is being replenished coming into the weekend.