Just bought a copy of splendor from the brick and mortar Amazon store in Wrigleyville in Chicago for 28.85. Online the version with the high quality plastic chips goes for 39.99. This was probably an employee/stocking error but if you really want the version with the plastic chips try it out.
That was my experience the one time I played with a newer set of coins. I thought the slight translucence made them look nicer, but I preferred my older coins overall because of the heft and my tendency to fiddle with them.