When sourcing a booklet maker, you must evaluate the sheet capacity (folding and stapling), typically ranging from 10 to 50 sheets. Pay close attention to the maximum paper size supported (e.g., A3, SRA3) and the stapling head durability. For high-volume environments, prioritize machines with heavy-duty dual stapling heads and adjustable side guides to ensure precision. Additionally, check if the unit supports square-back binding, which provides a professional, flat-spine finish similar to perfect binding.