Buying my first Tesla model 3 -2021 -LR/AWD - Winter tyre suggestions ?

Tesla is selling the winter tyre set for 1845 euros in Germany. I checked online and found cheaper alternatives for this - do you think it makes sense to get it from Tesla or 3rd party retailers would be fine ? This is what Tesla is selling : * 4 x 18X8.5J Aero rims * 4 x 235/45/18 - PIRELLI WINTER SZ3 tires * 4 x BLE tire pressure sensors