wow, ok... let's take this a step at a time.
1. Hundreds of different machines were made in treadles (if not thousands)
2. Quilting a sandwich sounds messy no matter the machine used. hehe
3. This whole section of the site is FULL of pictures, take a look around.....
4. Price range = $Free to $2,000+
5. I have never met a machine that is more temperamental than I am.
Hope this helps
Steve