That all depends on how much you fly. One gallon is 128 oz. Figure 8 oz per flight will give you 16 flights. Now if you fly 2 flights per day that will give you 8 days worth of flying. Glow fuel costs vary depending on where you buy it. $12-$20 per gallon is pretty average. So with that you can get an idea of how much it's going to cost.

Now I've had days where I have got through more than a gallon of fuel a day. I fly 15% Cool Power and I usually pay ~$18/gallon. So the costs can add up quickly. This is one of the many reasons why gas powered engines are so popular. Glow fuel at $18/gallon compared to gasoline at $3/gallon. No brainer there!!! This is why I'm starting to get more gas powered planes. And with smaller gas engines not being available it's becoming a better option all the time.

I hope this helps give you an idea of what it's going to cost you.

Ken