We have for sale a variety of new 4" submersible well pumps (wet ends - no motor!) that pump anywhere from 30 to 33 gallons per minute (GPM flow rate).
All are stainless steel, industrial-grade units with heavy-duty thermoplastic impellers that work with common motors like Franklin, Gould, Centripro, etc. All are built for corded electric motors and the great majority, when coupled with a 1 HP motor, will produce a maximum of 207 feet of head and a 33 gallons-per-minute flow rate. They can be mounted horizontally or vertically and all have max lift of at least 200 feet.
The price is $99 per unit and for anybody interested in buying in bulk, we can give you wholesale pricing depending on the quantity required. Thanks for your interest!