You can do strikethroughs like this:

DONATE TO NOT4CHAN^H^H^H^H^H^H^H^H 4CHAN!

DONATE TO NOT4CHAN 4CHAN!

Anyhow, I haven't been to a flea market too long. Ours are always outdoors and now that the weather gets nice again, I might go and try to find something. Last time I was there they only sold crap. I bought a hungarian book that had really nice illustrations about Eastern-European churches and cathedrals, that's all.