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Balloons for graduation parties are going to be in short supply because of a helium shortage. Many stores are going to their second and third suppliers to find helium for their balloons. Balloon prices are rising because of the shortage. Party America is limiting the number of balloons people can buy to five. A large helium plant in Russia shut down after an explosion. The Russia-Ukraine war is also affecting helium supplies because large amounts of helium come from Russia.