Your sums are way out. They paid 4.8c and if the oppies would of been tradeable on market for 2.5c and they sold,effectively they would of only paid 2.3c.
If they want to make a profit they will need the price to be north of 4.8c.eg 6.8c then sell for 2c profit.
As for the oppies,they need the price to go north of 6c. eg 8c then pay 6c and sell for a 2c profit.
Hope that clears up everything for those that were confused or didnt no.
Scorp