It’s a scam. Every time I list an item, I usually get the same response within the hour(s) of first day. Will pay by certified bank check, usually more than you’re asking for. Sentences aren’t composed properly, using wrong words and spelling. Trying to get your personal info and possibly compromise your personal accounts. Like I said before (scam) stay away.
P.S. Also beware the google number scam. They’ll send a number to you, usually a text from google. They want you to give them that number, don’t ever do it. Look up google number scam, scary what they can do to your personal info.