if they are going to be buying all the parts for you to put together i would charge about 20 odd quid.
if you were buying all the parts i would add a bit to the cost of the parts and not charge them as much say £10 and overall make a bit more.
this is a bit sneaky though
if you were buying all the parts i would add a bit to the cost of the parts and not charge them as much say £10 and overall make a bit more.
this is a bit sneaky though