I bought mine at Wal-Mart , since they are close to here and had every thing that I needed to get my setup started for less then I would have payed any where else in town but the 1 thing that I didn't cheep out on is my 2 Power bars that I will be using for my grow, I payed $60 - $70 for just 1 , but its worth it since I have my Computer on 1 of its own and my TV , VCR , PS1 , PS2 , PS3 , DVD player , Fish Tank stuff , Coffee Maker , and Stero split between 2 power bars. The price of the 4'' pots would have costed me $0.30+ just for 1. I'm gessing that the 4'' pots will last me about 1 month or two , after a while I might just say for get it and get bigger pots and use thoes for my moms and clones that I will be replacing my moms with after they outgrow the biggest size pots I wanna use as for the plants that I wanna flower I might go for half gal. but start them off in 4'' pots