From Longman Dictionary of Contemporary Englishswings and roundaboutsswings and roundaboutsBritish EnglishADVANTAGE used to say that two choices have an equal number of gains and losses, so there is little difference between them → swing
Examples from the Corpus
swings and roundabouts• But life with Thomas isn't just a merry-go-round it can be swings and roundabouts.• It is a long way from swings and roundabouts.• A case of swings and roundabouts perhaps?• The advantages of a small company over a large one is a matter of swings and roundabouts.• In recreation grounds the patches of well-worn grass close to the swings and roundabouts will hold the most money.• It is a psephologist's handbook, a guide to swings and roundabouts and a heckler's compendium. 