How much do foam party businesses charge per extra hour?

Commonly 100 to 200 dollars for each additional hour, which is mostly fluid and labor since the setup already happened. Extra time is your highest-margin add-on, which is why it should be one click to add.

Should I charge more for glow foam or color foam?

Yes. UV and color runs cost more in consumables and setup, and clients expect a premium for them. A 75 to 150 dollar add-on is common.

Should I discount for weekday parties?

A modest weekday rate can fill Tuesdays without touching Saturday pricing. Frame it as a weekday rate, not a discount off the real price.

What about charging by number of kids?

Foam doesn't really cost by the kid, so most operators price by duration and setup instead. Guest count matters for safety and space, so cap it in the package terms rather than pricing on it.

How much should I charge for a foam party?

Price from your costs up, not from a competitor's website down. Most residential foam parties in the US land somewhere between 300 and 600 dollars for a one-hour party, with wide swings by market. But the range isn't your answer. Your answer comes out of a worksheet, and the worksheet takes ten minutes.

The cost-up worksheet

Run one real party through these lines:

Fluid. Your cannon's gallons per hour, times party hours, plus reserve, times your cost per gallon.
Fuel and vehicle. Round-trip miles times the IRS mileage rate is a fair proxy, because that rate includes the wear you're not thinking about.
Labor. Crew hours door to door, not party hours. A one-hour party is a four-hour labor event once you count load, drive, setup, teardown, and unload. Pay yourself in this line too.
Wear and consumables. Something breaks or wears every weekend. A flat 5 to 10 percent of the job is an honest placeholder.
Insurance and overhead. Annual insurance, software, storage, and phone, divided by your realistic season party count.

That total is your floor. Under it you're paying to work. Now add margin: 30 to 50 percent over floor is a healthy range for a business that intends to replace its equipment someday.

The market check

Now, and only now, look at the local competition. Three outcomes:

You're in the pack. Good. Compete on being easier to book and better on the day.
You're way under. Raise your price. New operators underprice by pricing the party hour instead of the four-hour labor event around it.
You're way over. Check the market, then check the costs. Sometimes the answer is a leaner package. Sometimes the answer is that your market supports premium and the competition is underwater and doesn't know it yet.

Packages beat hourly

Sell a package with a name, a duration, and a price: "Backyard Bash, one hour of foam, 425." Add-ons carry the upside: extra time, glow foam, a second cannon, gender-reveal color. Hourly pricing invites arithmetic and haggling. Packages invite picking one.

The line to remember

The competitor's price tells you what they charge. The worksheet tells you what you can afford to charge. Only one of those numbers keeps you in business.