If you are shooting marketing videos indoors an excellent affordable light is a Neewer 18 inch Ring light. In this short video I’ll show you what a video looks like using the light and also without the light.
If you can buy the light locally please shop local but if you can’t find it locally you can get it on Amazon for around €80 – here is a link https://amzn.to/2RxInsh
Definitely worth getting this if you make marketing videos