We hav 3 large builder grade Jeld-Wen windows if you need big windows on a budget; there are 2 sliders (60"x72") and 1 single hung (48"x72"). One of the sliding windows lock has a stripped out screw, that can likely be easily fixed with an over sized screw and/or thread-lock.
These would be great for a DIY greenhouse project, shop, or shed.
All of the windows operate properly, no broken seals between panes and all have screens.
60x72 Sliders- $25 each
48x72 Single Hung $25 each