Both Ikea and Home Depot have had similar setups, and my wife and I have noticed how well they would fit a trailer. We would want propane
for cooking, so they wouldn't work for us, but it seems like an efficient way to get the required appliances without extra cabinetry, nicely fitted together, and it would work for someone who always has shore power.
I like the idea of a seamless stainless steel counter, stove, and sink.
The Woods units specs show "230-3 wire (12 AMP)"; that's 230VAC, drawing up to 12A from each side - it needs a significant power supply to run two good stovetop elements. The refrigerator
in these units is normally a conventional AC compressor-type unit, just without a separate cabinet, and sometimes with the compressor placed under the sink so it doesn't intrude into food space - that may be how this model fits 5.4 cubic feet in under the counter.
The closest I have seen in RV equipment is Dometic's integrated sink and cooktop, from their European product line. That unit is just the two items combined in one unit and dropped into a single opening in a cabinet; it doesn't include the cabinet or a refrigerator