The average cost of weddings in usa is $22000 but it could be less than $500
You could look up wedding chapels on Yahoo yellow pages. Some are expensive others are not, and also make sure what the seating capacity is as well as any additional things that are thrown in. You could ask the assistance of a friend with beautiful handwriting to help with the invitations. Try to send them out at least 6 weeks before the wedding. Use Ebay and Internet. You could find an inexpensive dress there as well as other items. Hope I could help and sorry I did not have other suggestions