Complex sentence: Newgistics can handle the shipping return process on a retailer's behalf by charging $15,000 to $50,000 to set up their return system, Newgistics then takes $1 to $2 for every transaction after.
Split into simpler sentences: Newgistics can handle the shipping return process on a retailer's behalf. Charging $15,000 to $50,000 to set up their return system, Newgistics then takes $1 to $2 for every transaction after.