This guy will just guess you will offer him some fancy extra services，and buy the item directly，he never confirm with you before he buy it. So when he receive the item, he will blame you not offer him that service which only exist in his dream.
Seller sale item only based on what their listing says,if they did not say something,they did not offer that.
If you not sure,or you really has some requests you want seller to do for you,you ask before you buy it.
You guessing seller offer some service,but they don't,you purchase the item without asking,then blame seller for the mistake,totally not decent