New Member wanting advice on what to do.

[Jonathan]

Why does it cost this much? If the company does 15 jobs, then the machine is paid for?

Because most companies are greedy and extortionate because they're trying to justify having spent a huge amount of money buying a commercial CNC router. I bet if you post this in the RFQ section here you'd get people quoting substantially less than that as they built their own machine. I certainly wouldn't charge anywhere near £1000 for that.

One thing that makes your parts more expensive is that you've got a large number of small parts to be cut out and they all need clamping down somehow when cut out. A decent vacuum table would do the job, but without that it's going to be very labor intensive.

EDIT:
Ok, forget most of what I said above. I just noticed you're cross section drawing which implies all the parts are tapered? If so then that will take substantially longer to machine with a 3-axis machine, as it's now requires 3D profile milling, or it requires a 5-axis machine. Either way that's going to add a lot to the cost which goes some way to explaining the high cost.