I have purchased 5 magnets last year from BannerBuzz.
Before ordering I had some doubts about placing magnets on my car. My car is leased and I had to make sure that the magnets are not going to cause any damage (no structure paint changes, no color changes, no scratching etc.) I've discussed this issue with the representative and was assured that placing magnets are not going to make any damages to the color.
I removed all 5 magnets in one year of using them. Here are two pictures of my car now, you all can see there are very visible explicit color changes on every 5 spots where magnets were placed on my car. If I knew that placing magnets on my car would cause such damage, I would never purchase it! I asked the professional advice because I usually trust professionals. The representative should have explained me about the possible damage or at least to let me know company does not have such experience. Nobody told me anything like that to warn me.
I decided to fix the damages before my lease expires, so I went to the nearest body shop to get an estimate. I was shocked that it is impossible to recover the initial color and almost all car has to be repainted!
I think that Bannerbuzz has to compensate me all the expenses, I send them an email. But they just send me back (I copy their answer):
We are sorry for any inconvenience this may have caused, but until now we've never encountered such an incident. Our magnetic signs don't leave any residue or damage the surface after usage. This is the first time we're hearing this. If it were known, then we would have mentioned it online on the website as well. Additionally, if there was any damage to the product we're here until the warranty ends and you've already experienced the same. For any other damage, there might be n number of reasons for which we can't be held liable.
I am going to claim to Court and want to warn everybody ordering BannerBuzz items