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Gayflower 2.0 Cost Estimates

This is an overview of the costs and benefits of using a single trailer for shower, toilets, fresh, and grey water as opposed to using OSS services (what's OSS, you ask?).

Assumption: 2300 gallons fresh water, 2300 gallons waste water (mostly grey), two toilets, 2025 OSS pricing.

Scenarios:

OSS + Portos - using OSS providers with portopotty rental
OSS + Ecozoic - using OSS with Ecozoic toilets
Gayflower - using the Gayflower
Water Only - using a water trailer for fresh and grey water; OSS for everything else

Annual Operating Costs

ItemOSS+PortosOSS+EcozoicGayflowerWater OnlyNotes
Potable Tank 1000gal1500150000SSS price incl pump and hose
First Fill 1000gal1000100000SSS price $1 first fill
Addl Fill 1300gal2275227500SSS price $1.75 each addl gal
Grey Tank Rental 250gal40040000SSS tank rental only
Grey Water Pump 2300gal4600460000SSS price per gallon
Gerlach Water Fill0014951495Gerlach 2025 price 0.65
Portopotty Rental (2)2082921109211United Site price for porto
Ecozoic prices based on 2024
Trailer storage Empire0012001200Empire Storage and Rental (Temen probably similer)
Annual trailer DOT inspection00250250
Round trip OSS delivery0013501350
BMORG OSS Fees00275275
Total1185718986457013781






savings over ecozoic

14,4165,205

Build Costs (est)

ItemGayflowerWater OnlyNotes
53ft x 102in Dry Van Trailer, Used, Nevada160000Price est based on TruckPaper completed auctions
53ft x 102in Flatbed, Used, Nevada08000 
7 IBC Totes, 330, new, delivered Empire (Fresh Water)40004000Cary Company
7 IBC Totes, 330, used (Grey Water), pickup Reno01050Nevada Container Supply
10 Grey Water Tanks, 250 gal each57900PolyJohn HT01-0250 at Webstaurantstore
Fresh Water Hoses and Connectors20002000 
Grey Water Hoses and Connectors20002000 
Pumps340340Harbor Freight DRUMMOND 1 HP Stainless Steel Shallow Well Pump plus backup
Steel hardware and welding100002500 
Floor decking50000 
Dry Van modifications for doors and utility access80000
Interior framing50000 
Macerating RV toilets30000(two)
Waterless urinals6000(two)
Interior Plumbing Parts30000
Sinks, faucets, vanity30000
Shower enclosures, shower heads25000(two)
Pond liner secondary containment30003000For gayflower, secondary containment is permanently built into trailer.
For water only, secondary containment consists of external evap ponds that must be set up on playa.
Lighting and electric40000
Parts, not including labor7723022890
Labor5000010000how much of this can you get from your campers? How good are you at hiring and supervising construction workers? Where are you going to build it?
Parts, including labor12723032890
years to amortize96.3