Rough idea on cost of retrofitting double glazed windows?

I have 2 fairly stock standard aluminium windows size 1500x1800, that I'm looking to get replaced with double glazed. Ground floor. Possibly also laminated for acoustic dampening.

I realise there are variables in play, but has anyone recently had similar done and could give a ballpark figure?

Just want to see if it's worth it before I go out and get some quotes. Any advice appreciated. Thanks