Buyer Trust:
Buyer has excellent ratings so there is no need to worry about the trust.
Conclusion:
However, the buyer only needs people who can write content in Greek.
There are few other requirements too. Like: SEO knowledge is optional, writer’s mother language is needed to be Greek, Excellent communication is needed and that is why, the writer needs to be online on a messenger.
The payment is superb: $10 per 400 words. This is excellent money that you can make for writing just 400 words. However, I do not understand what the buyer means by: Extra 5 dollars for opening a new blog?
May be the buyer is talking about opening a blog at different sites where one can get a blog for free. Not sure what exactly the buyer means: the only way to find out the exact requirement, one will need to send a PM to the buyer.
NOTE: I am not saying anything bad about the buyers. I am not saying that any buyer is a scam. The reason why I may say that a project is unacceptable: is just my own thought based on my freelancing experience