Thanks oldred and yes, air cooler. I need to understand better the end to end system. I thought 30ft of tubing with water traps / filter was enough to cool and filter the air but this guy insisted the little refrigerator cooler along with the filter was a must have.
I did some digging and the Wayne 6200 is 1950-60 vintage. Great for its day apparently and you can still find parts.
As far as price, I am tempted by this purely because of the low overall price commitment for an end to end system (minus piping) and the fact that if any individual component goes I can replace just that. I'm not convinced though and perhaps the price is too high like you say.