With us you have a trial period of 30 days after receiving the product. Returns are free of charge.
Will I get the full purchase amount back after I have returned the product?
Almost always. But it does logically depend on the condition of the product. To get the full purchase amount back, it is important to return your product in its original condition and undamaged.
So look at the product as you would in the store. Example: take a solar panel out of the box and view it from all sides, but do not install / mount it first and then decide to return it.