Yep, I really love my elevated sub-irrigated planter, but the cost of the drainpipes, liner, new wood, etc.. cost me about $75 for a 2X4 foot planter. It is the best producing planter I have and probably the easiest to maintain because I normally only refill the water reservoir once a month in the summer. Just stick a garden hose down the fill pipe for about 5 minutes until I see the water coming out the overflow hole. Does not get any easier than that.
But I can make a 4X4 foot hügelkultur pallet wood 16-inch-high raised bed for less than $2.00. I set a lawn sprinkler to water the raised beds for about 15 minutes on the timer 2-3 times per week, depending on the rainfall. Not so hard to do even for an old guy like me.
IF I had a bigger budget, I would be tempted to make my raised beds all sub-irrigated beds with liners and drainpipes. They are just so easy to fill up maybe once or twice a month and you don't have to worry about them.
But a big part of me enjoys growing food in low cost pallet wood raised beds to get the most bang out of my buck. I'm even starting seeds inside the house when the snow is still on the ground. At first, it was just to save a little money over buying plants at the big box stores, but now it's because our big box stores are not selling many of the plants I want out in my garden.

I tend to opt to save money where I can, even if it means I have to do a little more work out in the garden. Might come a day when that equation changes, but right now I'm still in pretty good health.