Let me start by saying: We have some friends who are hard up financially, and we have made it very clear that we do not expect any gifts from anyone. It's not important to us; what IS important is having those we love and care about there to celebrate with us.
That said, our wedding is ~250 guests (about 190 for dinner, and about 60 'crashing' it afterwards). I'd say only about 8-10% of our guests are those who are hard up financially. I've mentioned to my FH that I think we'll end up somewhere in the ****$ gift range (mostly from extended family), which I don't think is unreasonable from my experience both as a guest at other weddings and their gift openings, and working in a bank and seeing what brides/grooms deposit after their events.
My fiancé is convinced we will get maybe 2-3000$ total, because 'People just don't bring gifts, do they?'. I can't seem to get him to see that that isn't the norm, and that friends and family will likely be more generous than that.
Anyone else find their fiancé a bit...unknowledgable about this stuff, or is it just me?