They're pricey enough for an unknown entity. As you say, the pictures are definitely of springs, but I've seen many examples of Oriental eBay listings where they've simply had a word soup as listing titles, trying to hit every keyword in the world.
They look decent enough, but I think the quality of the paddles depend on the quality of the contacts and how robust the bearing surface between the arms and the central post it. It looks like the spring tension is the only thing holding them together, which is a simple design, but doesn't look to be a hard wearing as the bearings in my Kent paddles for example.
If they were 75% of the advertised price I'd maybe go for it, but at that price, I don't think I'll bother.