Survey increase in cost of pub generosity? (7)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

Survey increase in cost of pub generosity? Cryptically, if the cost of a round (of drinks at the pub) has gone up, then there has been an “increase in cost of pub generosity”! A round-up of the news, say, is an overview, summary thereof, hence “survey”