Then try to find the cheapest AIO for your ThreadRipper from AMD Recommended list or any on Special/Sale on Online Retail sites.
Unfortunately, Your ThreadRipper has a very high TDP Rating of 180 Watts thus it needs a powerful CPU Cooler.
Most High TDP Rated AIO are generally not very cheap, at least, the high quality ones.
The Coolermaster Wraith Ripper at Amazon costs $120.00 which isn't too bad.