Saint Cristobal have low grade oxide or, that can't be proceed with existing facilities(build for sulfide).
That kind of or could came from ELO.
IMO, Crescat is loosing time and money if trying to depressed SP in order to achieve better deal .(and that is pure speculation from my side)
But, think about this :
That's gonna be quite a big hub and spoke operation. But with the sorter(OPEX~0,07$/t), ore to the plant could be reduced to less than 10 000 tons per day. The othet 40 000(SCM capacity is 50 000) could came from their own deposit(low grade sulfide ore) and some other suppliers (Bolivian cooperatives producing metals for over 2 billion usd per year using entirely that strategy)
10 000 tons per day(could be less) and with 110t cargo wagons, the transportation cost should be less than 10$ per ton.
Spur Line building to SCM should be less than 70 million usd.
Now,
compare that with at lest 2,5 Billion dollar CAPEX for building similar to SCM facility at ISKA ISKA.
It is clear, that the economics is there.
What is not there is a common-sense approach from SCM owners (IMO only)
If so, they are doing a big mistake. Bolivian government was very clear in its intentions to have 5 new mine OPERATING till 2025 elections. SCM management coud learn it, in a difficult way, what means to not abide to that will. Then, there will be no court in Bolivia to help them. Many still believe, that Saint Cristobal shouldn't be sold to foriners.