Those who have ordered, call them up or whatsapp them and confirm that they are honouring these sales and will indeed be shipping. These are unbelievably good prices on some good PSUs. Take this step to ensure you are not just kept in a limbo. Similar thing had happened to me with RAM with them. They sent me incorrect lower spec kit and changed the listing later with the kit having lower specs. Thankfully i had screenshots of the original page but they never honoured original price and made me pay 2k more for correct kit.
I have since then purchased from them multiple times (even have an open order for 2 items right now) and they are trustworthy, just ensure these are not pricing errors as prices are all over the place.
Some 1000W are more expensive than same series 1200W. Some exact same models have 2 listing at 2 different prices. All this happened over weekend.