Hi Alex
that all depends on if you have a dealer near buy that can sell you the parts and if they are cheap enough.
I would first price a otor and that front cover and then decide, if the motor smells like burning it usually means its gone.
I had a older model bissell pro heat in my shop yesterday that smelt bad and sounded terrible , all it was was adamaged 608 bearing . I replaced both and saved the customer a nice sum of money instead of replacing a motor.
ask the factory and they will tell you its sealed motor. mmmm smells like bs to me , ten minutes and the right off the shelf tools and I had replaced the bearings. If you use top quality bearings the thing will last a life time , remember the bearings they use in these machines ar good but not top shelf , it would make the motor to expensive