I think you are right. There are many places where a vacuum leak can occur, so just replacing hoses would be expensive. Yea, pay the SA the $150 and suck it up.
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid. Albert Einstein
Swim upstream. Go the other way. Ignore the conventional wisdom. If everybody is doing it one way, there’s a good chance you can find your niche by going exactly in the opposite direction", Sam Walton.