Insurance inexpensive paintings

[iosif]

I have a question to the distinguished forumcanam.
I am in November-December, I spend three exhibitions I. Sapunkova. It is clear that the value of his work - this is not the price "Mona Lisa" (although any sign of talent - is priceless).
But many of the works - from private collections, the people have entrusted them to me, and I want to be sure that they will not let you down.
Does anyone experience insurance relatively inexpensive paintings, and for a short time (a month)? Who does it, and how much does it cost? I would be grateful for any advice.