This EBay seller says it's an original part. I don't believe yellow ones are.
I can't believe anyone can justify that price for such an inexpensive item to make. It's how vital it is for the operation the carb they think makes it valuable, so charge a highway robbery price to the unsuspecting.
EBay is infested with traders like this.

Ahh, if only victa had kept producing the thumblatch catcher series, they would be in better shape today!