I haven't tried places like craigslist although I am not very persistent at selling my peafowl. I will say though that early this year I had my yearling peacock Smarty listed on my for sale page on my site. I didn't think my website was getting many views and I didn't think it was coming up in many searches, but a lady emailed me about Smarty wanting to buy him! Her sister just happened to be going on a week long trip to the beach, so on the day she was leaving the beach she stopped by and picked up Smarty for her sister.
Then I got lucky that AugeredIn on here lives so close by and he was interested in buying all of my peafowl eggs this year. I don't ship eggs I am focusing on selling them locally. I haven't gotten into shipping anything yet, but I may consider shipping peafowl feathers. Dylansmom's comment about being able to pay for her peafowl by selling their feathers got me motivated to try and get into selling their feathers. I have sold some feathers before, but I would like to try and sell feathers more often.
You might have some sort of local ad magazine. Here we have the Shopper. It has a section for livestock which is normally where people put their peafowl and chicken ads. You could advertise in something like that. There is also a for sale area here on BYC, but they removed my ad for that when I was 19. They said I was too young to be posting my own ads for peafowl even though I was about to turn 20.
Also there are probably nearby livestock sales you can take your birds to. I think some places have a livestock sale every weekend or once a month...I haven't tried one of those places either but they can be good.
For advertising on your site, check out other peafowl websites and get ideas from their for sale pages. One thing I get annoyed with is websites that don't list the prices and you have to call them just for the price.
Here is my for sale page. I am working on getting photos of feathers for sale for this page:
http://www.bamboopeacock.com/For_Sale.html
Oh hey and by the way I see you chose a name for your peafowl farm! I saw your pictures on the Peafowl Image Database.