lowerourtuition11210 – You think the mechira takes 10 minutes at SOF ZMAN BIUR?! No! Your fallacy is caused because you never attended a mechira! It is a process.
The process of the mechira, from greeting the goy, going through niceties and small talk, introducing others in attendance, explaining the mechira (even if the same goy was used last year – a refresher), doing the kinyonim (several), passing the shtoros etc. …all this can easily take around an hour.