I have never handled one of these bags but heard good things about them. Received my first one today and was wondering if they usually come vacuum sealed? I was expecting a more solid feel like maybe how ground coffee is sold off the shelf. There's definitely a lot of air/space in the bag and when they went to seal the top of the bag they did not align the corners and it looks very sloppily done. Is this normal or do I have another reason to go out and buy more jars