Just an observation…
The recent reissues of Tamiya 1/48 planes which include vehicles kits, e.g. P-47D with jeep, seem to have prices that are lower than the original issues. I recently bought a 1/48 Ki-61 Hien which included a 4X4 Light Vehicle Kurogane. This kit was about $10 cheaper than the original issue of the kit which was sitting right on top of it on the store shelf. All the Tamiya 1/48 scale aircraft kits that are bundled with a vehicle appear to be significantly less expensive than original issues without a vehicle. Seems like a deal to me.