You are going to find either a day old chick(about 8 birr but requires more attentions and are more risky) or 8 weeks chicken(ቄብ about 140 birr) which are about 9 weeks away from laying eggs. Some sellers sell you chickens that the y claim are a month away but end up feeding them for 4 months. If you are buying in bulk I suggest you check alema koujis farm in debrezeit, they are a big company and trustworthy. And if you need there feeds(መኖ) I can provide that for you.