When evaluating the price of a Q-switch laser, you must look beyond the sticker price and focus on Energy Density (Fluence), Pulse Duration, and Wavelength options (1064nm, 532nm, 755nm). High-end models typically feature Active Q-switching which provides more stable energy output compared to passive models. Ensure the machine offers a spot size adjustment range of 2-10mm and a repetition rate of up to 10Hz for clinical efficiency. A higher price often reflects a superior laser rod (e.g., imported ND:YAG rods) and a UK-imported xenon lamp, which significantly extends the lifespan of the handpiece to over 1,000,000 shots.