For our immediate project we are only designing perhaps 2 forms. In terms of end users the quantity is unknown but we expect few hundred to few thousands who would fill the form and submit (by fax or by paper printout). $1 - $5 is very high if we are counting end user filled forms because, say for survey forms, I don't think anyone wants to spend that kind of money (let us say 1000 end users, and, using upper limit of your number, it would cost $5000 to get responses?). I can do this for free using web forms but obviously Adobe forms are more elegant and looks better and that is why we are looking at this technology. But I will wait for Adobe to call and perhaps revisit this.
Thanks for all your expert advise.