'Language barrier' ...........
I know what you mean!
The younger ones look to be about 3 to 4 months as far as I can judge against our own from the pics. I'm interested in the comparison to see how ours are developing in the absence of any reliable benchmark locally.
Could those whites be from battery stock? I haven't heard of any such farms in Thailand so probably not.
THB150 per kilo is right for a mature bird up to about two years. Try offering THB500 per bird. I doubt whether ones older than 2 years are worth buying at that price, though. Poults go for about THB250 each. Ask whether the birds have had injections against infection from mozzie bites. Poults should be injected at 7 days and kept under netting for their first 21 days. If they have raised spots on their faces, don't take them unless you want to be a nurse for a few weeks. If adults are healthy but not injected they should be OK but you should have them done a.s.a.p. and again annually.
I'm still no expert but this is our experience so far! There's some more about all this in my posts on other threads.
If you can't bring yourself to 'process' there is a market for live birds and that is probably the way we shall go. Also, Thailand has a chicken egg shortage at the moment so there may be a niche in your local morning market for turkey eggs.
Here's a link to the incubator supplier. I have a Google home page with Translator and
mia can help too, of course. They will deliver by EMS or you can buy from Chatuchak Market in BKK at weekends. Their factory is in Minburi, just north of Suvarnabhumi Airport. Ask your wife to call the factory for a chat - they are very helpful. The incubators are supplied with English language instructions - there should be hours of fun for you with those!
I haven't bought ours yet so I can't offer an opinion.
http://www.incubatorthailand.com//?cid=482444