This has been common fare for many Asian run appliance companies. They advertise items at low prices, take your money, sit on it for about two weeks then tell you that the item is out of stock. At this point they try to sell you a more expensive item. You know the drill, used car lots are notorious for this tactic.
DO NOT BUY FROM THIS COMPANY! THEY ENGAGE IN FALSE ADVERTISING USING BAIT AND SWITCH TACTICS.
They should be investigated by Law Enforcement!
I have included an image of an oven that is being advertised at a low price that is not available. Even though they know it's a discontinued item, it remains on their website.