$$$$$$$$$$$$$$$ Ouch , Ouch , Ouch $$$$$$$$$$$$$$
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Ebay

Only you will know how little you paid , they have 12 Volt stuff too !
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There are good and bad points about both power source's :
12V system - endless power , Un-plugging before dismounting
USB system - Dismount with out un-plugging , only 4-6 hours of power with out extra power packs.
For me $$ is consideration $200.00 vs $20.00 ???
One pair of my gloves is 12 volt , so I remove them and leave them between the handlebars , while I wear the USB vest under my jacket and walk off.