How do I easily get food for POF in each category?

I started POF recently, and rabbits were easy as you can use woad leaves. Now I have chicken though and I just can't reliably get food for them.

• Seeds: Buy limit is 100, and most seeds I try to buy at the GE seem to have no one selling them, unless I increase to outrageous prices
• Fruits: Cheap fruits also dont appear to be sold at reasonable prices, and then it quickly gets prohibitively expensive
• Vegetables: same thing

I don't really want to spend 20 minutes every day trying each seed and fruit one by one and only getting 100 at a time only to see them run out super quickly... what do people use?

Or should I abandon chickens and keep rabbits? What's the recommended progression?