Cost of production, and profit attainable through distribution line, including manufacturer and wholesale/retail sellers?
Maybe 8 or 10 years ago, I bought a #3 size smoother from a low cost, import tool store called Harbor Freight (here in the states), with the explicit reason to determine if the plane could be made to perform using machining techniques at the manufacturing plant I own. The cost of the plane was about $10.00 US. A guy on one of the US tool forums was selling blades for this particular plane for about $25.00 (O1 & 1/8" thick). I had one of my machinists grind the sole perfectly smooth and square the sides and mill the blade bedding area smooth. Anyhow, without doing anything to the wood, with my machinist's time, the new blade and cost of the plane, I ended up with a small smoother that could easily take full width shavings at .0015" in cherry (total cost around $75 to $85 US).
I didn't really use the plane and gave it away a few years ago. It must be noted that I had the plane long enough for the casting to season, and when I gave the plane away, it showed no evidence of the casting having moved.
I like my LN, LV, Clifton and vintage Stanley & Record planes, however, there is a place for these planes from the Pacific Rim as they can be made to perform. I've never handled any of the planes spoken of/sold in the UK, nor have I tried a Woodriver (US, sold by Woodcraft), but I believe there is a place for these and as the makers refine their techniques, the result may be positive for our craft.