Apple being locked into using the Vega branding, and not FirePro or Instinct is an additional hint that they’ll be undercutting everyone else’s prices with those GPUs. AMD wouldn’t let them use FirePro or Instinct branding at a low price point. Their other partners would be furious. The Vega branding is probably a big hint at the likely price range.
If Apple was going to charge as much as a FirePro or Instinct, they’d actually make sure to use the same branding. They’d look foolish for selling a Vega at FirePro prices.
But Apple (and AMD ) are using the current AMD "Pro" branding. 'FirePro' is the former "professional workstation" brand. If go to AMD then Radeon Pro Graphics drop down menu, you'll land on.
https://www.amd.com/en/graphics/workstations
Up until AMD has the new bleeding edge Radeon Pro product of W5700 to talk about that lead card there was The Pro Vega II Which took you to a link here:
https://www.amd.com/en/graphics/workstations-radeon-pro-vega-ii
Now if you go to AMD's "show me all the Pro cards" page is the Vega II there? No. But pragmatically if you don't have a MP 2019 you can't use the Vega II. So not sure who they'd be selling to that wasn't already an Apple customer. We'll see if AMD sells MPX GPU kits or that is a Apple store (apple approved retailer ) exclusive.
Yes, the FirePro D300 , D500 , D700 were substantially less that the roughly equivalent mainstream FirePower models that used the same die (with some functions turned on.) But they also were substantially higher, that the consumer models 30-40% like mark ups instead of 80-100+ % mark ups.
The Vega20 implementation here is not a "consumer" design. It isn't like they are "upselling" a consumer implementation. This actually is the "big compute" die that is not aimed primarily at gamers at all. Comparing to Nvidia upper end Quadra and V100 and T4 card prices is likely very wrong. ( not the same ecosystem selling into), but AMD was below that with the MI50 MI60 but not in the bargain bin either. ( just better $/performance than the Nvidia stuff on some workloads.)
These Vega II card also have Thunderbolt controllers on them. Bringing an implementation of those to market doesn't come free at the dime store. ( seen prices of two port TBv3 periheerals? Well thre are 4 ports here. ) If the Redeon VII is basically around cost if add another 16GB HBMs. , Infinity Fabric connectors. possible PCI-e swtich to providing two x4 bundles , two TBv3 controllers , the MPX connector stuff... probably looking at something in "consumer" guise would be $900. Slap a 45% mark up on that ( 30% Apple 15% AMD) and would be in the 1,300 range.
The $1,000 stuff pretty much ignores that it is more than just a simple consumer GPU card. There is just substantially more electronics there. That is going to cost more. It isn't thousands more, but it will be much more than price anchoring on mainstream cards that AMD sells.
P.S. the MPX 580X ( which doesn't appear to be a kit that Apple is going to sell) that doesn't have the TBv3 controllers or the Infinity Band stuff. It has only generic mainstream connectors ( HDMI). So price controlled and not "early next gen" (precursor to Display Port 2.0) tech. But does have a "Pro" prefix in its official name so that will be a marl up.