To sell Avon you have to be 18 years old, if you're selling at a farmers market you could purchase a few items to sell there it also have books with you at the market so customers could order from the brochure and pick their orders up from you when e orders arrive,
The beautiful thing about Avon is that there's no sales quota and you earn 40% off of what you sell. No you don't have to buy the products you need to sell, you'll only be ordering what customers want to order from you.
As far as Avon, I love being a rep. I've been with Avon for almost 5 years and when I first started I was working full time and going to college so it definitely works around your schedule. I'd say in the beginning I was able to make about $200-300 every month and it has increased after 5 years now. Now my husband and i coach our Avon team of over 300 Representatives Nationwide. Plus it was just $10 to join so I wasn't breaking the bank to join, lol. I hope that help but if you have any questions feel free to ask.
Avon rep 5 years