Gas Cans

I was looking at gas cans, it would be nice to have about 100 gallons around the house, but not all together, so I was thinking 20 - 5 gallon cans - and the cans should be about $13 each was the cheapest I could find on the internet . so about $260, and then to fill them - but they should also have some additive to stabilize the gas while storing.