I can't remember the thread but I think about a year and a half ago there was someone that had some clips made.

You could take one to a local machine shop and ask them cost to make one, wouldn't be cheap but alot cheaper than $480, be the cost of a hr of labor.

Seen several people try different things reattaching their clips, I tried acouple different things the best I have found was some windshield installation urethane, have to buy a tube from a shop that changes windeshields, around $10