I entered Whiterun, went to the Warmaidens (inside), traded a little bit, than went outside. Went to my house. When I came back (during day time) to the Warmaidens it was written that it's closed and it has an adept lock oO. Tried to wait more than day and so on, nothing hellped. Traider inside is gone.
Also I've got some enchanted daggers for sell in my inverntory, they upped in price from 700 to more than 1000 gold at the same time.