Looks really good!!

These objects are quite nice, actually. If you use individual objects to create the scene, without homogenizing the objects into much larger chunks before run-time, you can sometimes cause more work for the render backend when using four levels of detail opposed to two or three. This is due to the fact that render calls on identical objects/pieces that are displaying the same LOD phase will batch, there-for creating little to no extra render overhead VS there only being one piece of XYZ object on the scene even if you have 1000 of them. If it goes to display different detail levels, this is a new set of draw calls here (worse if you have disconnected areas of the UV grid, and also other maps such as normal maps will also have to be drawn as with anything else). Draw calls are the enemy. If you can do so with some objects without pop-in, use less detail levels as it'll also make the VRAM weight just a tad smaller. Draw call reduction in DX12 or Vulkan rendered scenes is not as serious a need as in DX11 and older, due to multi-threaded rendering-backend being possible. DX11 and below is an absolute bear to get performing well by comparison, and often gets choked with draw calls leaving one core of the CPU jammed at 100% while the GPU and remaining CPU cores/threads not being fully utilized. I would still keep this version for sale, however. If someone is using a modern rendering engine, I don't foresee a huge issue with draw calls due to these objects, but I still thought I'd mention it none-the-less.

Cool set! Nice looking textures, light weighted models! Easy to use in UE4! I love variations and aged versions!