I have limited experience with bumpers. All I have is Werksan training bumpers. I had really good luck with the Werksan distributor here in the US.
I would go for the used set if it were me. If they were used for a meet or two how bad can they be? I scour the the internet for used stuff and have been somewhat successful.
It sounds like your options are pretty expensive. How hard is it to drive to an Eleikio distributor? You could save on shipping, by driving there, which is the bitter pill to swallow.