Depending on the style, construction, and the volume of water held - manufactured Ollas range in price from under $10 and can exceed $200 (ex. a full-blown kit with 25 Olla Balls, a 5-gallon reservoir bucket/with float valve, 25’ of ½” poly tubing, etc.). It also depends on how many are needed for your planting area. They are ideal for gardening on smaller plots of land, in raised beds, and in containers.For larger landscapes/gardening areas it comes down to personal choice whether to use them exclusively or supplement them with other forms of irrigation.