I wanted a marker to black out shipping labels on packages easily. Did the job of blacking personal data like addresses and tracking numbers with minimal effort.
We needed a fat marker for yard sale signs and it was great for that but the ink didn't last long. Only lasted for one bunch of signs before the ink started to go. But it lasted as long as we needed it to.
Initially I was concerned about purchasing this marker considering the complexity of the product. However once I purchase this marker my fears were allayed!