If it is really available as the shop claims, there will probably be people hoping that they will actually get one in the given time. Supply/availability and demand.
I think that's because people are constantly cancelling. Anyway, I've now got myself a 3080, with the prices of the 6800 it hardly makes sense to go for AMD here.
not included....if your case allows it, i.e. has a bracket, you can use a pcie4 riser cable for vertical mounting...otherwise there are graphics card holders...i for example have this....https://rog.asus.com/de/graphics-cards/accessories/rog-herculx-graphics-card-holder-model/