According to The Verge, they have estimated that a fully specced out Mac Pro together with the new Pro Display XDR (which costs $4,999) could cost a staggering $50,000. According to their estimates, they have taken the base Mac Pro, added 12x sticks of 128GB of DDR4 ECC RAM which will add another $18,000 to the total cost.
They also threw in 2x 2TB SSDs which would cost an extra $2,400, and they also upgraded the Intel Core Xeon processor to the 28-core Intel Core Xeon W 2.5GHz processor which would add an extra $7,500. As for the graphics, they threw in two AMD Radeon Pro Vega II GPUs, which they have estimated to cost $12,000 in total.
All of this will set you back around $50,000 give or take. As to whether or not these figures are official is unclear as they are very rough estimates, but suffice to say that with a base price of $5,999, we imagine that any upgrades won’t come cheap.