I know a lot of people aren't a fan of the reference design cards but cheapest I see right now for an Anniversary Edition card for any collectors out there.
https://www.dell.com/en-us/work/shop/accessories/apd/ab003248
Regular version can also be had at $349.99
https://www.dell.com/en-us/work/shop/accessories/apd/aa762434
https://www.dell.com/en-us/work/shop/accessories/apd/ab003248
Regular version can also be had at $349.99
https://www.dell.com/en-us/work/shop/accessories/apd/aa762434