Not too bad profit wise if you have the skills to make them, although I see them for 1.5 - 2 billion for sale on contracts, im not sure if these are actually selling or not.
However (theres always a but...) it seems that theres market changes in planning in the undisclosed future
Specifically from the recent devblog:
Advances in Reverse Engineering
Reverse engineering gets most of our love in this patch. What was clear is that we have plentiful material supply besides a few exceptions and the available blueprints and materials for reverse engineering were lacking.
Intact and malfunctioning relics will now reflect the greater ease with which the ancient technology can be melded with the current technology within experimental laboratories using these relics. The number of runs each blueprint will have has been greatly increased on these two making them much more valuable to acquire.
In addition the useful data gathered during reverse engineering which can lead to datacores or hybrid tech decryptors has been increased so any outcome will be more fruitful especially in meeting the overall costs of reverse engineering.
Availability of Datacores and Decryptors
The datacores needed for reverse engineering have been generally increased in potential supply. The numbers you will get from wormhole sites and the numbers of those sites has been increased which will lead to a much greater supply of datacores and should lower the reverse engineering costs significantly.
Some of the fullerites have had their volume reduced which will lead to a much faster mining rate and less transportation costs for some of the gases. Easing a little the effort it takes to get the gases back to known space and the marketplace.
Sleeper Salvage Changes
There has been a set of changes to the amounts of each type possible from a sleeper wreck. The rate at which some types are dropped has been changed which will lead to easing of some bottlenecks and some parts which were being salvaged too frequently.
Change to Fulleroferrocene Power Conduits material requirements
The Carbon-86 Epoxy Resin material requirement has been switched to Scandium Metallofullerene for the power conduits. This is one of the more significant changes which will ease the pressure on carbon-86 a lot and the burgeoning costs of acquiring the gases for making carbon-86.
It seems that the market is already beginning to stagnate a bit whilst people hold their breaths to find out just when this patch will hit, so watch those prices over the next few weeks, if you can play the markets just nicely, you can possibly make a killing.