He found far too many valuable items there. In the end, he chose to buy the ability "Niche Fusion" for 80 coins, and the identifier for 5 points.
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Niche Fusion: Ignition: Fuse similar abilities, talents, or titles, to increase their grades.
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This ability is beyond useless for ordinary adventurers, but it is beneficial to him. He doubted that the abilities would have their effect stack, so he bought this ability in order to improve the grade of his abilities. He then proceeded to fuse all three Fear abilities into one.
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Notification: Congratulations on acquiring the ability Fear (EE)
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He found out that the grades are ranked with F- as the lowest, then F, F+, FF-, FF, FF+ FFF-, FFF, and then FFF+, before proceeding to E-. It, therefore, made him happy that the fusion resulted in an EE grade Fear.