got a customer, bought a house. basically gutted, so asked me for a quote, labour only, to do some electrical work, extra sockets, etc. install new CU. now, technically, i have no problem. it's the financial side that buggers me. basically, i quoted £700 to do the CU and the bits and pieces. all good so far. now, he wants downlights throughout. i planned it out, 32 downlgihts in total. quoted £20 per fitting ( labour and cables), got knocked down from £640 to £450, now he wants 8 more fittings ( total overkill, 6 in a 3m x 3m bedroom and hall & landing) without paying any more. so far, i've had £500 out of the £700 initial quote which barely covers the time spent so far. my thoughts are to walk away, cut losses, move on. i can see future problems as he wants outside work and won't pay for safely installation. btw, he's just had all the front and back fenced and block paved... materials alone must have come to £5K. should i walk?