However you may get some good deal on last year model.
Yes. Last year's model is a good hit IME, throughout bike buying generally.
Last year model are slightly more reliable with the older shifter (as we have been getting some 3 speed shifters that no longer functions).
Also 2018 model now have a one piece brakes as oppose to cartridge, which is a mite annoying but they claim new pads offer less wear on rims.
@JurekB started
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However you may get some good deal on last year model.