Induction vs. propane gas expense

We have recently remodelled our kitchen and moved from a gas hob to an induction hob. In general it cooks much the same as gas and you get similar levels of control over the temperature. One style of cooking that is not recommended is 'slide' cooking as this will likely scratch your hob surface - this can be mitigated by putting a piece of parchment paper under the pan or lifting the pan off the hob. we don't use a wok and can't see how we could with our hob.

The surface of the hob gets hot but not as hot as it would it it were gas or electric this means that spilt / spattered food doesn't generally burn on to the hob surface and it is much easier to clean.

The hob is touch control and so far we've not had any problems with this. If you lift a pan off the heating zone it will switch itself off automagically after a certain amount of time. Before this happens if you put a pan back on the zone it carries on cooking. If there are no pans on any active zones then the whole thing switches off after 2 minutes.

We chose a NEFF Flushline hob that sits in a natural black granite work surface and the whole thing is positively beautiful and a pleasure to work with.

It sounds like the only thing you can do is use an interface disk - basically a piece of metal that is compatible with the induction cooktop, which will then transfer the heat to the espresso maker.

You can also potentially use an induction-compatible pan as an interface - see this question.

Unfortunately either way, you'll lose the fast-response benefit of the induction cooktop, because you'll now have to wait for the interface to heat.