Hi Jacob,
I think you should contact the seller and ask him nicely what he can do with the silver work. I think if he wants to maintain a good long-term relationship (with you and undoubtedly the rest of collectors in this forum

), he would at least offer to help get a new pendok, if not partially offset the cost.
Not to worry, these silver pendoks are common and are too expensive. There are probably 'cottage factories' of silversmiths doing such work.
I would actually say that this keris and many others were refitted within the last 10 years.