A bent or damaged prop, even if it just a little dinged may be out of balance...Running out of balance stresses the lower unit propshaft wearing the seals and bearings, a little at a time, until one day it won't work right any more, the shop advises a rebuild or complete lower unit........=$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
Fix the small stuff before it can become the big stuff......Most of the Propeller shops that I deal with have an abundant supply of used and re-built stainless props at fraction of the cost of new, and they will allow some swap back and forth until you get one that fits for you...Repairs on a dinged up stainless are relativly inexpensive and if done by a good shop will perform like new......
Never tust you life, or your boat,to second class equipment if you can avoid it...