I have the opportunity to buy about 50 lbs of roasted coffee beans at an excellent price. I don't mind grinding my own but does anyone know how long the whole beans will stay good?? I tried finding information on the internet but everything I found must be geared toward coffee gourmets. Heck, one site said "Roasted coffee beans only last 4 to 7 days maximum before they oxidize and lose their entire flavor". Yeah, right. I've used ground coffee that was three years old (from a sealed can) and it was just fine. I would think that the whole beans would last longer than that...right??