Good luck when one of them sues you because the brake failed or something.These bikes were for friends and a neighbour . They would have been classed as uneconomical repairs . The bikes had been neglected for years and had accumulated rust and caked on dirt and grease .
The time I spent working on them worked out as pennies per hour which excluded ordering and collecting parts .
I know what is like when it came to insurance when I repaired cars . So many limitations,certain cars excluded, any welding had to be watched for half an hour . Plus the cost !
Good luck when one of them sues you because the brake failed or something.
Financial gain from any sort of repair work done makes you liable as I'm sure you know.