They sure are, and so are their descriptions. I don't think I've ever deliberately ordered C. sardensis, but I've planted them at least once, probably twice, and they're still going strong after almost 10 years. They do form big round fruit and propagate either through fruit or bulbils or both.
Along the way I ordered several other varieties, including white and "pink" forms. The C. luciliae 'Alba' I got may have been true to name, because it produced one or two big flowers on each stem, then gradually vanished away. The pink was lilac and somehow blended into the background.
In 2009 I ordered CHIONODOXA FORBESII BLUE GIANT from Scheepers and finally got the big clusters of large, blue-on-the-violet-side flowers with showy white centers I was after. I'm planning to buy more, and keep my fingers crossed I don't get more C. sardensis.
I can't recall seeing C. lochiae offered. Puschkinia I know and love, but it seemed to bloom at widely separated times over the course of this early, warm spring.