Decking Rough Price?

I just did a 5m x 5m, butted to the fence in a corner, with posts and 40mm rope ballustrade, cost £636 for all the gear, and £250 labour, concrete, 4inch posts every 3ft, joists at 400 centres - softwood, took a day, and that included moving the shed for them, and all of its contents!, I am returning tomorrow to put in the led lights around the perimiter of the deck, inset, just 10, and then a step, as its raised 12" from the ground, so probably got half day left. A good tradesman will quote a cple of days for something this size, which equates to roughly 120 per day, which is pretty standard most areas, no labourer. i used a paslode to fix the boards, so its a quick easy job to do really, £50 a sq meter is probably a good benchmark.