Yes, frustrating, isn't it? There are many of these places that list every part description they can find, and claim or imply that they actually have them in stock, or can quickly get them from a supplier. In reality, they're just using a "scattergun approach" to draw interest in case it turns out they can get the parts.
They rarely show an actual price, like the first site, but usually say "Request Quote" or "Limited Stock" or something similarly vague, like the 2nd one.
Sorry you had to get your hopes up. :?|