I also had difficulty sourcing. I used a couple of apps to do so, here's the final playlist:
Equipment | Supplier | Cost |
Pool light | Florida Sunseeker | $508 |
Spa light | Florida Sunseeker | $497 |
Pentair CCP520 filter | FB Marketplace (used) | $400 |
Flowvis FV-2 | Amazon | $112 |
Pentair Intelliflo | Amazon | $1802 |
Pentair Intellicenter | FB Marketplace (NOS) | $1081 |
IntelliChlor IC40 | FB Marketplace (used) | $250 |
Pentair IntelliValve | AZPoolSupplies.com | $215/ea |
Pentair 200k MasterTemp | AZPoolSupplies.com | $2171 |
Air Supply Silencer (spa blower) | FB Marketplace (NOS) | $126 |
I didn't list the white goods, because they were generally easier to find. There were also way more options in white good suppliers (although, I used 95% CMP).