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I can only compare to an older P85+ I drove, but I've seen posts about them costing $120k+ new. He didn't mention L-mode so the config for an insane P90D should be around $130k. Personally, I thought the improvement over the P85+ was definitely worth $10k. Obviously a personal preference, but it really was a big difference from a 25xxx VIN P85+ to the 94xxx P85D I played with for a little bit.