The price of a pressure washer gun is influenced by a variety of factors, reflecting its features, specifications, and overall build quality. 
1. Pressure Output and Power:
The pressure output, measured in pounds per square inch (PSI), is a crucial determinant of a pressure washer gun's price. Higher PSI ratings generally come at a higher cost because they indicate more powerful cleaning capabilities. Pressure washer guns with greater pressure output are capable of tackling stubborn stains and tough cleaning tasks, making them preferred choices for heavy-duty applications. Buyers should assess their specific cleaning needs and choose a pressure washer gun with an appropriate PSI rating to avoid overpaying for power they won't use.
2. Water Flow Rate (GPM):
The water flow rate, measured in gallons per minute (GPM), refers to the volume of water the pressure washer gun delivers. Higher GPM rates provide faster cleaning by covering larger areas. Pressure washer guns with high GPM are ideal for cleaning large surfaces like driveways and decks efficiently. While they may cost more, they can significantly reduce cleaning time, making them a valuable investment for those with extensive cleaning tasks.