http://www.mybulgaria.info/modules.php? ... ys&start=7
There is website shown near the end of the thread so that might help with your query.
I think the main point is, that this is not the time of year to buy but in the Spring. I'm not sure about your area, but around our place a truck comes round regularly after the Spring selling chicks, baby chickens for about 2 - 3 lev each. We have bought plenty in the past but next year we intend to get some turkeys. Ask neighbours as they will know.
We feed our chickens a shop bought Chicken Food/Milled corn mix and any left-over uncooked veg scraps.
Good luck with your birds.