We had pricing information show before the signup page, but we saw a 30-40% drop in our funnel. We'll probably add back the pricing page, but have it tucked away in case someone wants to find out without signing up.
When I thought about using your service for my business, I was so disgusted with the disingenuity of not showing your prices on the homepage (I had to email support, who sounded annoyed -- and not at all apologetic -- to query the price points), I decided to not even give you guys a shot.