whats the lowest billing tool restoration you will do?

[coppercone2]

If its a common tool, and you price yourself out per hour vs the tool cost, what is the cheapest you will bother working on something?

For me when it gets under like 5$ per hour I have serious trouble unless its somehow interesting. And that low number is infrequent work that has a maximum time of doing per couple of months or so. Or I feel insane.