Samsung 960 Pro 512GB fast NVME SSD from Samsung.
Currently out of stock, but order can be placed and will be delivered when it becomes available. Credit card will only be charged when it becomes available.
I always had a good experience ordering OOS items from Amazon.
Good deal if you can wait couple of weeks.
Best price from Amazon, so far. The cheapest I can see elsewhere is £282.49 from CCL computers.