ORIGINAL: Broken Wings
The difference in price reflects the Solid Platinum coil used in an OS plug vs the Rhodium/Platinum Element. Solid Platinum coil is more expensive no matter who makes the glow plug...
That might be the problem. Solid, as in pure, platinum often is not desirable. As with most metallurgy an alloy is much preferred. I hope you aren't suggesting that other brands use a hollow element for the coil?
