Is Multiturf cheaper than natural grass?

This depends on the size of the area?

Yes and no- they can be over a 5-10 year period. If you were to add up 10 years of watering, feeding, cost of two lawn mowers and (in many cases) the cost of re-turfing, an artificial turf installation can be a cheaper alternative. Also consider the time saved at the weekend and reduced costs of labour in your garden!