They are indian blue and black shoulder about 2 years old also i have a big pond is that dangerouse
Are they india blue AND blackshoulder (solid wing) or are there two birds and one of them is india blue (barred wing) and one is india blue (solid wing)?
Around here, regular india blue males typically are listed for about $125. When I go to bird swaps, you will sometimes see people selling yearling males for $35, and they'll take $20 by the end of the swap. I have seen people asking anywhere from $5 a chick to $80 a chick, with the usual being ~$15-20. I have seen adults be listed anywhere from $30-300 each. So, is it a good price? Well, it's about average for an india blue. The blackshoulder mutation typically sells for a little more here, so if they are blackshoulder birds, then that's an ok average price.
As for free ranging them- totally agree with Zaz. If you want free range birds, look into hatching some yourself. Older birds can often have a difficult time figuring out that where they are is "home" unless there are other peas penned to call them in.
As for the pond- nope! In fact, your peas will enjoy hunting bugs and small fish (if there are any) and frogs around the edges of the pond. The first time I added any sort of water feature to the pea pen, Octavian got algae stains on his legs from standing around in it so much. Silly bird.
If you want to figure on how many eggs, their breeding season lands somewhere in the span of April to August (often times shorter). So let's say an average of 3 months (may to july, which is fairly mid range and typical I think). If your hen lays an egg every other day (because they typically do, they are not "every day" layers), then about 45 eggs. However, they also seem to "cycle" 2-3 times, and won't lay for a few days sometimes. If it gets too hot, they might stop laying in favor of working to keep cool. So how many eggs a year? My guess would be 30-35 average.