Full article at Reuters
"Wedding experts agree on a couple of things: the closer you are to the bride or groom, the more you are expected to give, and do not give more than you can afford just because of the expectations.
Defying the "cost-of-the-meal" school of gift-giving, where guests give a gift roughly equivalent to what it cost to host them, Kristen Maxwell Cooper, deputy editor of the wedding-focused website TheKnot.com, says location and cost of the reception should not be the burden of the guest."