It depends on how well tu know the couple getting married, and how much tu can afford. My niece got married last spring, so we were very generous with her. tu can see if the couple is registered anywhere; most people do that, and there is usually a range of gift items and prices. tu can also go in with a group of friends to get a más expensive gift. But at the end, it is your budget, and your friends do not want tu to break your account for a gift.