1. The seller gives unclear, vague and incomplete information and does not want to disclose information on the origin of the product.

2. The seller prefers not to or does not want to meet at his home.

3. The price is too good to be true. Often the seller has several advertisements for new products at very low prices on the internet.

4. The seller does not want to give any or limited contact details.

5. The seller sometimes sell from abroad.

6. Photos are unclear or taken from the internet. Sometimes there is no photo. Please note: This may partly determine that someone is not reliable, but only based on this characteristic does this not always have to be the case.