Is serious/non-serious so binary?
My biggest issue is I wouldn't want to commit anything, or give too much information away just to get a ballpark figure. I'd also assume that I'd be aiding price discrimination - There is no problem having up-front ballpark pricing and a 'contact us' link.
Hell, just having a high ballpark figure will weed out students and small businesses.
> There is no problem having up-front ballpark pricing
There certainly is, and it's a bigger problem than potentially turning away people who are uneasy about sharing contact info. Just to name one: A SaaS company may be willing to undercut a competitor's price for a sufficiently big prospect, but advertising a high price at the outset may turn that prospect away before you have a chance to talk to them.
