Hey Guys i Just tried to place a Step Up order on de.evga.com to an 3080. As i expected in the list to choose you product to step up to the 3080 is listed for 823.59€ including 16%tax. But at the checkout page the gradn total value is completly wrong and no matter wich numbers i use i cant figure out what evga is doing wrong there.
 
Here are the numbers shown on the last page. as you can see i should pay 633.24 but instead it should be 823,59-289,99+5,99 wich would be 539,90€ what went wrong? can anyone clear things up?
 
Return Card- €289,99  Step-Up Upgrade Card€823,59  Shipping ChargeEuropean Standard€5,99 
Grand Total ( Include VAT 16% ):
€633,24

I had a similar issue but it fixed itself. If i remember correctly the 16 VAT was added twice after they calculated the step up price difference including the shipping costs.
For me tho it fixed itself. If i were you I'd just get into queue and write support.