If we look to
this thread from a few years ago, we find a very reasonable estimate of Power Points as
1PP = 50kW per ton of ship.
This puts an absolute upper bound on antimatter production of
50kW * 1 day / c^2 = 48 micrograms per day per ton of ship mass for a system drawing one Power Point. That's about $1,000 of antimatter per day at Spaceships prices.
Of course, that absolute upper bound means 100% efficient conversion of energy into antimatter, which is probably a ludicrous idea! As far as we currently understand these things, matter and antimatter must be created in equal amounts, which automatically halves our efficiency — 24 µg/day/PP/ton.
As stated earlier, Spaceships AM costs match the TL11 figures from the Designer's Notes, which pin that to a factory producing 100,000 µg/day for an installation cost of $1B and a production value of $100,000/hour. A hundred thousand micrograms per day suggests a single system on board a 2,000-ton ship at that impossible 100% efficiency. The only slightly less-impossible 50% efficiency would mean a single system on a 4,000-ton ship, which matches up
exactly with the table in the original post.
I would suggest 20% efficiency, meaning 10,000 tons or a SM+10 ship, as a very reasonable non-superscience TL11 figure. That would mean a table like this would fairly closely match the figures in the Designer's Notes, assuming the efficiency scales roughly with the cost at each TL:
Code:
+4 +5 +6 +7 +8 +9 +10 +11 +12 +13 +14 +15
$/hr 100 300 1K 3K 10K 30K 100K 300K 1M 3M 10M 30M
µg/hr 4 12 40 120 400 1.2K 4K 12K 40K 120K 400K 1.2M
Workspaces 0 0 0 0 0 0 1 3 10 30 100 300
Cost ($) 1M 3M 10M 30M 100M 300M 1B 3B 10B 30B 100B 300B
At TL9, divide production by 100 and multiply cost by 25.
At TL10, divide production by 10 and multiply cost by 5.
At TL11, use the listed figures.
At TL12, double production and divide cost by 20.
Alternatively for TL12, multiply production by 10 and divide cost by 5, but a non-superscience system requires 5 PP!