Inexpensive replacement windows for garage

Where would you go for new windows that don't need to be energy-efficient, as they're for our detached garage?  Originals have structural issues (having lost a few battles to gnawing squirrels in the past) so I don't think they are salvageable.  Obviously don't want to pay top-dollar for something which just needs to emit light!  Thank you.

Home Depot or Lowes

the basic windows at HD would be fine for you, and if your old ones are common sizes new ones are on the shelf.

Thanks very much! They will soon be on order.