Imperfect print sale - Prints have very minor marks, usually a random ink dot or sometimes a printer bleed mark close to the edge of the print that would likely be covered when framing, some have slight corner bends or dents. Slight damage to paper coating usually only visible in certain lights.  
 
Some prints are test or display prints with no obvious imperfections - the colours may be slightly different to final artwork listed for full price sale. 
 
A5's issues - design slightly off centre (a few mm) or has a rough edge on one side from cutting to size 
 
I have tried to photograph and detail the issues with each print as much as possible in the title and have only included prints with imperfections I think would go unnoticed once framed.