I reckon a motorised reel might save 10 minutes a day - so maybe an hour a week,.. so going by the average hourly rate here that'd be £20 - £40 extra earning potential (in extra time) per week,.. so from that point of view you could potentially increase your earnings considerably over the course of the year,... but still, £840 is mental money - for that price I'd want a remote control and self layering mechanism too at the very least.