@Mik said in Attention, Costco shoppers who are gardeners!:
Our mantra is low maintenance.
I'm simplifying many aspects of my gardening, too, though I have to say most of my yard doesn't really need that much work. (Of course being a gardener there are lots of tasks I undertake that I don't consider work!)
I have a postage stamp-sized lawn and mowing takes less than a half hour. Battery mower requires no maintenance beyond an occasional blade sharpening. I long ago gave up the whole lawn maintenance thing and skip fertilizer/aerating/etc and my lawn doesn't look much different from anyone else's.
Probably the biggest source of annual maintenance is in the fall. We have two 60+ year old maple trees, one in the front yard and another in the back. And the neighbors who surround us have similarly large trees. We get a ton of leaves from September into December. But that's something I could turn over to a landscaper if necessary.
I am eliminating some of the beds, though. Need any hostas? 
I can buy a lot of fresh local produce for $150. Plus money for dirt, plus plus plus.
Yea, hobby veggie/fruit gardeners like me aren't doing it to save money on food. I do it for the satisfaction of being able to walk out into the garden and pick something that I grew; it brings me great joy. Working in my garden connects me to the earth in a very profound way. And to family - my father and his mother were avid gardeners, as was my maternal grandfather. I feel like they're all working beside me as I putter around my garden.
Don't forget the exercise. Think of the money I save on a gym membership or exercise equipment. Those piles of dirt aren't going to move themselves!