I recall seeing around 15 or 20 purchases. I remember because they would each strike me as they were, in my eyes, not too appealing, but each person has their taste and budget, so good on them.
There was one new forum member who was keen about posters but turned out all he collected was poster images (.jpg's) collected from the interwebs. Thus you can have a good interest in posters without having to buy (or even show to the public) much.