When comparing prices, the load capacity (typically 8kg to 25kg) is the primary cost driver. You must evaluate the solvent type compatibility, as machines designed for Perc (Perchloroethylene) are generally cheaper but face stricter regulations, while Multi-solvent or Hydrocarbon machines have a higher upfront cost but offer eco-friendly benefits. Additionally, check for stainless steel drum construction, inverter-controlled motors for energy efficiency, and the presence of an automatic distillation system which significantly impacts the long-term operational cost and initial purchase price.