I assume you mean the Camel-ADV system which is $429 USD. Good system but not worth the expense for me. The other photo is deceptive (not very well packed that day) - the load on my bike is Rigg soft dualsport bags with a Firstgear dry bag across the top. Neither have to be removed to access the extra fuel. I understand the idea of emptying the spare fuel asap but then you have no spare fuel, so I will stop for gas, top up the main tank and just keep my reserve intact. Having that extra fuel either on the rear rack or in the main tank makes very little difference to me. Some of the places I've ridden gas stations can be 400 kms apart and I've had to use the extra fuel but if there's a gas station somewhere ahead I wouldn't bother wasting my time stopping to transfer fuel. YMMV.