Ok - went to the dealer today. The price varies widely - includes receiver, SW flash, EBC module, coil spring upgrades, wiring harness - it all depends on your VIN, whether you have the high load power option (it costs more if you do), how much load you carry, etc - and can run anywhere from just under $2k to $4k +! They even have 6 different options/settings for the coils, based on load. For me (based on my VIN, already have the hitch receiver, don’t need a coil upgrade, and have the high load power), I would probably be looking at $1500-1900. They are not offering a simple 4-pin option (running lights, turn signals, brake lights) for light trailers (kayaks, jon boats etc) for single-axle, sub-3000 lb configs. Honestly, I would just go down to your local trailer shop.