I would only pay $5 if I REALY liked the quilt. Since everyone has their own taste, I agree with those that feel you would earn more $ by selling them for a lower price. $3 for one and 2/$5 sounded good to me. Five for $10 would perhaps make them feel they were getting a bargain, but then accounting gets a little more complicated.
Good luck; hope the trip is both educational and enjoyable!