"Are you looking for someone
?", he asks in a gravelly voice that comes from deep within.
Comma inside the quote please since you are continuing the sentence.
Delete the question mark please.
"Oh, you have nothing I am interested in...
", says the merchant.
This is when I have nothing to sell to the merchant.
"Ahh, sadly I have nothing today in the category Special Items.... okay, maybe tomorrow is a better day
", says the strange dealer.
You might want to take another look at the text for the merchant. There might be more text that might need to be corrected.
When choosing a bio avatar.
"Oh... I forgot... the local shinigami don't allow these sets to be used in public, sorry... choose a personal one if you like
.", states Urahara.
Comma instead of the period and delete the comma after the quote.