Y'all have been members long enough to know vendor reviews aren't permitted. Tsk tsk. Wink wink. Nudge nudge. (See what I'm doing here???) But I'm leaving this thread intact because that joint truly IS as terrible as people say,
@MrGoodkat. Maybe worse than people say.
Thiara cancellata, though, are tough to find in the US because they just don't ship well. I've only ever seen misidentified Nerites at the usual importers. Not too common among planted tankers because they burrow into substrate and sadly don't tend to live very long in captivity.
Someone here used to have some in the early 2010s - if I remember correctly, so it may be worth searching the forum. Because they may have details about sourcing.