2'500.- it costs at the dealer Spielwaren123 1'010.- it costs at the dealer Digitec --> Tamron SP 24-70mm f / 2.8 Di VC USD G2 Nikon F

Hello, just order. The lens specified is for Nikon full-frame and is also APS-C compatible.

Yes it is. You can always send it in to Tamron directly. Just send in your Receipt. You always have the warranry from the manufacturer. Stores like digitec just handle it for you.

This lens is compatible with the D5500. However, the lens is built for full-frame cameras. It is therefore larger and heavier than it needs to be for this camera. If you ever plan to switch to a full frame camera like the Nikon D750 Nikon D750 Body (24.30MP, 6.50FPS, WLAN) I would consider it. As an alternative, this lens would be suitable: Sigma 17-70mm F/2.8-4.0 DC OS HSM Macro C, Nikon F DX

Yes.