The Grommet holes are spaced at 110cm apart along the sides which is too far apart for a 6m tarp. And at 80cm apart along both the 3.6m ends. I've had to punch in my own grommets at every 55cm and 40cm respectively so I can lace it down tighter to the roof of a carport to keep the wind from lifting and putting further strain and possibly ripping it.
Ah, well.... I was going to say 'what can you expect from a cheap tarp' but this Tarp is 180gsm and the same GSM as the more expensive ones you can find on eBay.
Perhaps the price difference has more to do with how many (more or less) Grommets holes you get for Tarp lacing.