That is exactly the total opposite of what Elena actually thought and didSHITTY MANHWA!!! YOU HAD ONE JOB!!!
Dugeon monster number 1
Pitching count doesnt exist for the phoenix
If the example we saw of them baking cookies at home is any indication, he probably went for quality personal time rather than expensive excursions; and if he was a workaholic or dungeon addict like is being hinted, he wouldn't splurge on anything that would take longer than a weekend. Not to mention, he most likely didn't start out raking in the big bucks at first, so his wealth might only have been recent; three years tops. The EX and her friend there, were probably also looking for fault to begin with, so it is unlikely they would ever notice any subtle quality of life improvements in his circumstances, no matter how expensive they might have been, because they wouldn't have been gaudy and flashy luxury.
Bro beat the shit out of the knight