Fun product but misleading proof.

When designing the image, the proof led me to believe that the image would be solid without any empty space. When they said custom pin, I was under the impression they would be a metal instead of plastic. The latter may have been me not reading all the details, but how was I to believe from the proof that there would be unfilled space, hence transparent portions of the pin? For the price I paid ($29 for 50 pins), the transaction seems fair. But these are definitely not worth the regular price of $77 for 50 pins.