They look like a good option for weight, and have good reviews on DHL but after a bit of digging I can't seem to find any reviews with photos. Prices seem pretty damn fair for DNM coke prices, but I'm skeptical about their 90% purity claim. And unfortunately they have a 7g minimum one would have to commit to, so its not exactly something I could just sample.
edit: a member in the dhl forum tested it and found it to be Cocaine : 8 Levamisole : 1 Methylecgonidine 1
Which is still pretty gosh darn good and woth the price imo, even if its slightly misdvertized.
If you read DHL a little more carefully you would see a lab test was just done on his product. Its Between 80 and 89%. The answers to the rest of your questions can be found in the thread aswell. He has listing pictures.....I'm going to say it looks like that.