Yes. Indeed, this is the common custom. However, some are particular to use an item which is wide three by three etzbaos. #2645a
Yes. Indeed, this is the common custom. However, some are particular to use an item which is wide three by three etzbaos. #2645a
You may not return it, since you already made a Kinyan, unless the seller agrees. Sources: חושן משפט סימן קפ"ט ועוד