What "should" a peachick or a pea egg cost?
There's lots of ways to measure that. If a buyer feels like they got a fair deal (not ripped off), and the seller feels like he or she got a reasonable amount of money for what they put into the product, then they are both happy.
Some people think a fair price is one that people are willing to pay.
A basic business principle is that if your selling price is less than what it costs you to produce the product, you will soon go broke. Hobbyists sometimes are just trying to defray costs a bit and not go quite so broke, quite so fast.
I suggest, at least as far as eggs go, that you have a look at ebay records of sales and see what eggs are going for there... and those are sold with NO guarantees as to hatching. Some eggs or lots of eggs are going for quite a bit. Others not so much. But generally significantly more than what you guys are asking, sounds like.
MinxFox & BirdRain, have you added up the cost of your feed over a year? How many eggs do you get? How many chicks to sell? What about costs for wormers and amprolium, and pen building supplies?
When I have hay to sell, I check the market report and find out what the going rate is. I ask my friends what they are paying and/or getting for it. Sometimes I am astonished, when I haven't been following the prices... I think it's important to talk to other people with peas in your geographic region, to see what "market" prices may be.
You both have college bills either coming up or coming due... let those birds do some of the work for you