I know its not all about fuel but how about this.
I used to fly my C42 from Damyns hall to L2K a fair bit and if I flew at 85kts which is about 16 ltrs an hour L2K was about an hour. Thats there and back for £32.00.
Drawback on mogas is about 50p a ltr and with a 70ltr tank thats £35 back. If you went to L2k twice on that tank that works out about £9 per leg
happy days
I know have an RV6, a fast great plane but a tad more expensive to run. I'm very lucky my brother bought my C42 from me and I can still fly it when I want. For good fun affordable hours in the air it's hard to beat.