Well, the great thing about chicken run compost is that the longer you let it sit, the better it breaks down. It's like money in the bank and ready to take out when you want/need it.
I don't think I could do the volume of sifting compost I need without using my cement mixer compost sifter. Well, I suppose I could using the manual 2X4 wood frame with hardware cloth over the wheelbarrow, but it would take a very long time.

The older I get, the more valuable my time is to me. For me, spending the money on the compost sifter was worth the cost, plus there is very little labor involved in the automated sifting process (compared to doing it manually), so my old body does not feel all the aches and pains of working out in the hot sun all day.
If anyone is serious about converting a cement mixer into a compost sifter, I still recommend trying to buy a used cement mixer in good working condition. I spent almost a year looking for a used mixer where I live before I gave up and bought a brand new mixer for my project. But that cost of the cement mixer is by far the most expensive item on that project list.
Even buying a new cement mixer, my total costs on the cement mixer compost sifter project was about $240 at the time of the build. Since I was paying $5 per bag for compost at the big box stores, and I could sift 3 bags of chicken run compost every 15 minutes, it only took me 4 hours of run time to break even on my costs of this project (12 bags of sifted compost every hour = $60 per hour savings of not buying compost at the store).
I think I paid about $200 for the cement mixer, so if you can find a good working mixer for maybe $50, you could really save some money.


Warning. Since I put my compost sifter into action, I have almost doubled my raised beds and gardening space. It's so easy for me to make chicken run compost, and then sift it out for use, that I started building even more raised beds. So, what I save on time and labor on sifting the compost, I probably make up in how much time and labor I spend on my much larger gardens.