I buy my bean in 500g bags. They come in vacuum packed bags. When opened, a bag usually last a week so i don't have any great issues with my beans going stale. During the week I fold over the end of the vacuum bag and put a bulldog clip on it to hold it shut and put that bacg in a bigger Snap Lock bag. Does it make any difference? I don't really know but I do it anyway.
"Yes, Madam, I am drunk, and you are ugly. But in the morning, I will be sober and you will still be ugly."
Sir Winston Churchill