It&#x27;s worth 50-200k when you can make it look exactly like a non-motorized wheel in front of many spectators and race inspectors :) if you don&#x27;t mind people seeing the motor, there are tons of DIYs in the hundreds to single-thousands of dollars range depending on how far and how fast you&#x27;d like to go: <a href="https:&#x2F;&#x2F;m.reddit.com&#x2F;r&#x2F;ebikes&#x2F;" rel="nofollow">https:&#x2F;&#x2F;m.reddit.com&#x2F;r&#x2F;ebikes&#x2F;</a> etc