Total costs for this project materials so far is $1,600 (plus my labour and transport, which I havent logged). Return should be $400 p.a. saved lawnmowing, $500 p.a. fruit and veg production, $300 p.a. eggs, so given that fruit production will take several years to ramp up, break even should be 2 years. If you include any weekday labour, depending on how you value your time, growing your own food is unlikely to make sense economically - its really about flavour, enjoying the garden and poking Monsanto in the eye.