@TheCrazyDuckLadyHel , you're allowed to sell stuff here, they just ask that we use the buy/sell/trade forum:
https://www.backyardchickens.com/forums/#buy-sell-trade.67
Welcome to BYC! You can put your webpage in your profile:
https://www.backyardchickens.com/account/personal-details
I don't have a webpage, so I just entered BYC's so you could see what it looks like: