I'm not sure about folding poker tables specifically, but prices have been rising for everything lately.
The world is reopening. People are starting to travel and spend again, demand is high in leisure sectors, and prices go up. That's probably temporary, I suspect things will normalize again in a few months.
Of course, it could also be that nobody was buying poker tables during a global pandemic, and so prices were low to try to move stock. Now that's changing, and prices are returning to normal...?
Hell, I don't know. I bought like 800 sets of chips over the last year, so I'm probably not the brightest bulb in the box.