I do think $8 is ridiculously low considering it would cost that to buy them fresh if they were available. I think $50 each is nearer the mark and I would take $100 for them both.
'J', 'Q', and 'Z' are non-premium letters. Both these domains have only 2 letters premium, so frankly speaking, they will not fetch more than Low $xx.
Max $20, I agree with mirul. I've got a much better LLLL then both of these, and mine is not worth much more than $40.