Seems like a good discount.
Bowden's Own Snow Blow Cannon is for fun and safe touchless washing. Snow foaming is a car pre-wash system which has become popular with professional detailers and hardcore enthusiasts. It's used before hand washing to reduce swirl marks and micro-scratching when washing. Attach the Bowden’s Own Snow Blow Cannon to your pressure washer with the correct adapter, fill with water and the correct amount of Snow Job foam wash and you're ready to go.
Bowden’s Own Snow Blow Cannon features-
Quality made and more advanced design, especially created for mega foaming action.
Unlike generic a Snow Foam cannon, this is made with quality components to be tough and durable.
Stubby water bottle, so it won't tip over when filling or storing.
Bottle label is marked for easy filling with the correct ratio of snow foam solution.
Adjustable spray nozzle, from a wide fan to a strong jet.
Top air adjustment knob, to alter the amount of foam you wish to use.
Handles up to a powerful 3200 PSI of water pressure.
Taped and thread locked internals so it won't leak like cheaper, poorly constructed generic cannons.
Solid screw and lock in adapter mechanism, so it won't blow off or leak.
Not taking away from OP's deal post, this is a good price for the Bowden's version and of course you can collect it straight away.
A generic version can be bought from AliExpress here.
I have both the Bowden's and the Roue and the only difference is the shape of the bottle.
I would also advise getting a short handle with quick connector as you'll have more control with your pressure washer. If you do this make sure you get the quick connector for the foam cannon, rather than the specific attachment for your pressure washer.