What do you think it's worth?

well any re-pop part is expensive but the availability is all that matters .....if a part is not available at all then it wont matter how much a person is willing to spend.

when I got my re-pop tail lights I was more worried about the quality and availability more so than the price.

Any re-pop or nice used part is usually expensive that is why this is a big kid sport. There are a lot of cheaper hobbies like basket weaving. :D