This pergola is a great value for money, frame quality is good. Aesthetically great. I chose this particular one because I wanted something that would let some faint amount of sunlight in. 
The only downside I see material wise is the polycarbonate sheets. They are really thin and fragile and can get dented really easily either from installation or external objects falling on the roof. So of you live in an area where you get hail or if you’re going to install it under a walnut tree like I did. Better to look for something else.

Now installation. This was intricate and a labor intensive installation , it’s easy to put together but has so many parts which makes the process cumbersome, It took 2 guys 8 hours to put it 
together, they did an excellent Job.

So to summarize 

Pros pergola looks beautiful, good quality material, light weight if you plan on relocating it around, great value for the money.

Cons fragile polycarbonate roof sheets, a bit labor involved with too many parts.