Not enough cores to afford it all

"Nearly thirteen thousand cores?" Mathew muttered when he finally saw the price for the service he was looking for.

This amount of cores was worth just a tad less than two of the sabers Mathew sold. Or, in simpler words, it wasn't small at all.

'I still can afford everything that I picked so far with some leftovers,' Mathew thought as he ran the numbers in his mind a few times. 'I will even have enough left to get three merchants and then upgrade them to a fortress at the castle we are going to,' he thought, trying to predict the necessary spending he would face in the near future.

'So, in other words, I can actually fix this place?' Mathew thought, closing his eyes and imagining all the kinds of damage done to the school's building.

The first and main one was the school's southern wing. Or rather, a pile of ruins that it turned into, exposing the entire center of the school to the outside elements and thus making any sort of heating near impossible.