Bosch Dishwasher Motor Pump Sealing Kit10013913

I bought this kit due to a leak in the bottom of the dishwasher. After following You tube guides I replaced the motor seal set and o ring. The motor is just a push fit into the sump seal which I had not bought. After rebuilding the dishwasher, the sump seal was leaking, so I have had to order that part. I feel the cost of these parts are very expensive from spares suppliers - Ransom Spares are the cheapest supplier.