10,000 / 250 = 40 baht/sqm for delivery + 110/sqm for grass = 150 baht/sqm for the grass. If you contract someone to lay it for you add another 30 baht/sqm. Total cost for 250 sqm at 180 baht/sqm = 45,000 baht. That is very expensive grass. And who is going to look after it when you are not here? Plus the fact it will need a lot of watering (daily) during the long dry season. This year is hotly tipped to be an El Nino year too. For Thailand an El Nino year means no rain and drought.
Some 6 years ago I bought some sods from the local center for my 60 sqm patch at 35 baht/sqm. Six months ago I bought a further couple of sqms to repair an area destroyed by the dogs - I think I paid 40 baht/sqm. Providing your ground is well prepared beforehand, and that blackened rice husks stuff AtB got from the Rice Power Station looks like a good product too, laying the sods is a pretty easy task to do yourself. I manufactured a tamping pad/board and special shoes to walk on the newly laid grass once it was down. The shoes were an old pair of the plastic variety with two wooden boards (like snow shoes) screwed on beneath. Both products worked a dream. Total cost for the lawn - just over 2,000 baht. Mind you, I am a pensioner and I do count my pennies.