As there is almost no serious feedback on the historic tick data sold by several third party providers on the forum I want to share my experience with one of those: Backtestdata.com
I was looking for historic tick data on a DAX Futures contract and ordered the data from this provider who explicitly markets its proficiency and the quality of data on their website. However, I want to warn all NT trading participants. The data provided is useless and the quality is not appropriate. Please refer to the 2 screenshots attached- one from Kinetick with the real tick data and one I bought from Backtestdata.com
You will see, it is not usable.
Hope, this message will be read before ordering crap from this supplier.