Overall I am satisfied with these bags, but everything depends on the use that is made. Let me explain: the product itself is quite the description, only the plastic bag is fine is it is very easy to tear. On my first use I try to open the zip and the top of the bag is downright ripped ... I guess you have to go more quietly since it worked for the second bag. I'm not necessarily a nag, but if one has to do with sweetness is not ideal. Now that I know I will not do it again the same mistake.
By cons, they are sealed, so do not let in and out moisture. That's a plus. But do not expect to put heavy things inside. It's his fault.
Is this is a good value for money? Everything depends on your usage. But in any case, it is one of the cheapest.