The entire HexRays suite costs around $30k.
You can get other versions of IDAPro for cheaper, and they actually make old versions available for free -- although this may just be the x86/amd-64 decompilers.
The nice thing about IDAPro is that you get one interface you can use to decompile multiple hardware instruction sets -- including PPC and 68K.
For home users, there's also IDA Home: https://www.hex-rays.com/products/idahome/ for $1/day ($365/year).
More details on the different variants at https://www.hex-rays.com/order/
I list all this purely as a satisfied customer.
If you want something similar but free, I recommend https://ghidra-sre.org/