Schaller 471. I think they are similarly priced to the one you've linked but it might be worth searching. There's a second hand one on Reverb (it's not mine)....
OEM Schaller 471, 8 String Bass Bridge, Gold, Top Loading, Intonation/Height Adjustments https://reverb.com/item/33250093-oem-schaller-471-8-string-bass-bridge-gold-top-loading-intonation-height-adjustments?_aid=pla_uk&utm_source=android-app&utm_medium=android-share&utm_campaign=listing&utm_content=33250093-oem-schaller-471-8-string-bass-bridge-gold-top-loading-intonation-height-adjustments