hi there,
you need to charge a reasonable amount, otherwise what s the point of doing it.
i would look at charging an amount per block per month, irrespoective of the number of bulbs being replaced.
therefore add up the total number of bulbs, then calculate the cost,add profit, divide by say 6, then multiply by 12, therefore you have covered bulb cost in 6 months, and then profits after that.
otherwise let them do it themselves. they dont want to do it, as they will know the cost of getting a sparky or odd job bloke out to do it, they would look at £50.00 call out, minimum charge. every visit.
regards
martin
regards
martin