Woosh is thinking long term a scaled up production, the cost of one problem every 100 bikes is not a problem, but on a small scale it would be a head ache
one build for a customer and you become a trader with all that would entail [public liability tax ni ] and with the cost of the kits on the rise I do not see it working
If you sold it as new or even used on ebay and the purchaser uses pay pal even in 180 days time it develops a minor fault its a full refund.[even if the listing states no returns]
ebay always side with the buyer if you take the time to read all the small print
The only thing not covered is a second hand car unless there is an error in the description it could be a total loss no bike no cash worse still if the credit card is stolen again no bike no cash .If you fit the kit to there own new bike they would loose the manufactures warranty and any problems are yours
sorry to be doom and gloom but used to sell and install cctv/alarms so already now the pit falls