Fountain Pen Hospital started their Pen Frenzy sale today.
Today at noon they listed 250 different pens (not only fountain pens). The site states another 150 will be listed tomorrow at noon.
It appears the sale pens are one-offs; when a pen is sold its gone. I could be wrong about that.
I browsed the site today and saw markdowns ranging from about 25% to 40%; again, no guarantee that I am 100% accurate.
Usual disclaimer: I don't work for them; just buy from them more than is healthy for my bank account