Ask them, immediately, if they tightened the wishbone bolts with the wheels hanging/car off the ground.
If they say yes, take it back immediately and get them to tighten the bolts with the wheels loaded/suspension at normal ride height. Or the front bushes will fail early. Within weeks. Earlier if the bushes are cheap copies.
Or, just cut to the chase and fit poly front bushes to the wishbones. These offer further improvements in steering accuracy with a very slight trade off in harshness.
But do one or the other immediately to save your tyres, as you don't mention set up after the work. (Full geometric set up, caster, camber and toe.... see wheels in motion web site (black boots)
They are right that labour would be higher. But it depends what wishbones where fitted if this is a cheaper option long term. There are some shockingly bad pattern parts out there.