Teal is literally cheaper on the mothership and includes full retail support:
https://www.amazon.com/hum-Colgate-Battery-Toothbrush-Travel/dp/B0981D2WM1/ref=asc_df_B0981D2WM1
a quik google and found for $15
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Bought these for the whole family at Christmas (from Woot, of course)! We all really like them! Highly recommend! 
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