Asbestos overall if left undamaged is a relatively safe product and can not cause any issues to the home owner. Unfortunately however accidents can happen and sheets can easily be damaged exposing dangerous asbestos fibers in the sheeting. If the house is likely to have renovations done in the future this can be expensive if the asbestos based products are to be modified in any way. Cutting, drilling, sanding, even scraping the product is dangerous and removal or dumping of the product requires a special license and is expensive.
I have a link that explains the dangers here, if you wanted to read more about the dangers and issues involved. https://www.asbestos.com/abatement-guide/
Or clink on the link Useful links to finance and advice in the above tool bar.