When hiring a professional to install any vapor barrier in a crawl space the majority of the cost is in labor, insurance and operating costs. So if you are going to pay $1500 for a temporary fix why would you not pay $2500 for a permanent one? Here’s my view; do it once and do it right. Even if you do it yourself don’t get caught up in the art of saving money, because in the end it will cost you more. Let’s face it, we don’t really know how long we will be living in a home. It could be three years or it could be thirty. If you plan a short term solution, you could own a long term problem.