I think I've shown one of these pieces before, but they sum up me feelings about damaged glass very well. One is a Kraka piece with a very visible stress fracture and I still don't regret the $9.99 I bid on it. The Losanghe vase has a few quite obvious bubbles, but it displays very well. (Thank you, Anita) Yes, I prefer my glass to be perfect, particularly if it's a relatively common piece that's not too expensive. But on a rare piece or on a piece that I might not be able to afford otherwise, I'll accept some damage. The artistic vision still shines through for me.
David