Unfortunately no. You can check the official KTM microfische for the spare parts, (to give you an example just the fuel pump from KTM costs close to $500...), but you honestly thought that the Rally tanks from KTM, fuel pump, exhaust header, seat, carbon skid plate, navigation tower with lights, KTM rally screen full CNC brackets, dedicated electrical harnesses for fueling and electrics, high pressure fuelling hoses with billet non-return valves, side panels, and many other parts would cost $700?
This is why BMW bikes seem to be expensive - they've made, tested and fitted all these modifications for you. I wouldn't touch all this with a barge pole - what happens if it breaks down in Peru? Buy a Beemer and lose all your worries.
Most of the main and critical parts have been tested by KTM. The tanks, fuel pump, lights, screen and other bits and bobs are straight from their rally factory bike. Regarding the rest, they have been thoroughly tested since 2016 in the deserts of Morocco and through various RTW trips. The good thing is that you can buy all the critical parts from a KTM dealer wherever you are.
BMW makes riders pay for stuff 90% off them is not using. As much as I like the Aurora kit, I don't need the extra fuel. A tower is more than enough for me. In that case, I don't pay for what I don't need.