Green screen kits

Im in the Uk and to go with the video editing Im going to need a greenscreen set up and half decent camera for things like you tube videos etc.

Now what Im seeing is a lot of kits with fram for green screen, a green sheet, possibly white and black as well and some softbox /and or umbrella reflection lights,2 of these or possible a third over head one.

example on amazon.

CRAPHY 2000W Photo Studio Softbox Continuous Video: Amazon.co.uk: Camera & Photo

Excelvan Studio Continuous Lighting Kit Softbox Kit: Amazon.co.uk: Camera & Photo

https://www.amazon.co.uk/PIXAPRO%C2%AE-Background-Reversible-Photography-Registered/dp/B018EB5S1M/ref=sr_1_1?s=electroni…

But then if I look on a camera specialist site what looks like the same things are 10 times the price

https://www.essentialphoto.co.uk/product/pixapro-6800w-4-softbox-kit-with-3x6m-chroma-key-green-drop-and-telescopic-stan…

Fovitec - 3000W Continuous Lighting Softbox Kit with 3m: Amazon.co.uk: Camera & Photo

Whats the differences and whast should \i look for and avoid kit wise please