Very fair price. I used Randakk's repair kit for my GL1000 and the price was about $50, although that includes some parts that are reusable and I could repair other carbs for about $30. It's basically a precision machined replacement post and a jig for drilling a hole to locate the post, which is epoxied in place. It was pretty straight forward and worked perfectly.
But I think this method is likely superior over the long run.