Just purchased this dual zone TEC 20 bottle unit from CL for $100. AT 43" it’s a bit taller than your stated requirement, but I see them all the time.
POS? Could be. TEC units aren’t the most efficient and have a limited capacity (delta below ambient) to cool.
This replaces a failed 12 bottle unit that made it over six years before becoming uneconomical to repair.
I like conventional compressor units more, but smaller sizes are difficult due to the size of the cooling apparatus.