One thing to keep in mind is that there are different types of pedal assist. There is cadence sensing, where the assist is based on how fast you are peddling. If the assist level for a given cadence is low enough, you still have to put in some effort to maintain speed. If it is higher, then you put in no effort (except freewheeling) to maintain speed.
Second type is torque sensing. This is quite a bit more expensive (an additional couple hundred, plus higher installation skills if you are converting yourself).
Another note is that most assists don't sense hills, so you will have to manually adjust the assist level when going up hill. So at that point, using a throttle-only setup, with a throttle lock (hold throttle in a position for 2 seconds and it keeps it at that setting) works really well. In that case it gives you the sensation of having a good wind at your back helping you out.
The primary cost can be the battery -- anywhere from 200 to 1000, depending on capacity and quality. Second is the motor, 200 - 500. Some come with kits that give you simple throttle control, or you may want to add an advanced ebike computer kit (like I mentioned in the previous comment).
All told, I'm about 1200 in my ebike, plus the bike itself.
Second type is torque sensing. This is quite a bit more expensive (an additional couple hundred, plus higher installation skills if you are converting yourself).
Another note is that most assists don't sense hills, so you will have to manually adjust the assist level when going up hill. So at that point, using a throttle-only setup, with a throttle lock (hold throttle in a position for 2 seconds and it keeps it at that setting) works really well. In that case it gives you the sensation of having a good wind at your back helping you out.
The primary cost can be the battery -- anywhere from 200 to 1000, depending on capacity and quality. Second is the motor, 200 - 500. Some come with kits that give you simple throttle control, or you may want to add an advanced ebike computer kit (like I mentioned in the previous comment).
All told, I'm about 1200 in my ebike, plus the bike itself.