Between the travel expenses, hotel stay, special-occasion attire and, of course, the wedding gift itself, guests often shell out hundreds just to attend. Nationwide, the average cash gift is about $160, according to wedding-registry website Tendr, based on data from the 2016 wedding season. And wedding gift amounts tend to spike during prime summer season, Tendr found. Wedding gift-giving habits also vary by region, according to a separate report by Bankrate.com. In the Northeast, guests are particularly generous. Nearly one-third said their typical gift is at least $200, compared to just 13 percent of everyone else. Bankrate polled 1,000 adults in early April.