It is clearly a bait as I spent quite a bit on the phone, asked them to update it, but they are all still there after a year or maybe more. If it was a matter of weeks, or whether just a singular model unstocked appearing stocked, maybe you could be right. I doubt they have any Omega crystals left, but google any crystal model and these guys have it all stocked
The scenario: Someone needing parts Google's the crystal numbers, orders parts he needs with the crystal, call or email comes indicating the crystal is not in stock but other parts can be shipped. Quite likely the person would go along with it and get the rest of the stuff. This way they can take business that would otherwise go to someone with actual stock. Quite unethical I think