This card might be particularly interesting in a poor Preston build. With any of the 3-class talents in play, this is at the very least a fast Emergency Cache, he can play after his turn, for instance in the Enemy or Upkeep phase, so it is still readily available in the next Mythos phase on his Family Inheritance to either spend on Counterespionage, boost a skill test, or save it for the Investigation phase, if not needed. And Dark Horse still stays online, as long as he spends the 1 resource from Upkeep.
He could also cash in the money in the Mythos Phase, if he just wants to blow it into Moxie or Dig Deep on a test. Unfortunately, to potentially use it for Counterespionage, he has to decide, before he sees the card. If he has Antiquary and DH in play, he could play Counterespionage up to the 6 resource effect (using the resources from Antiquary, of course), and still start his turn with an additional resource on his Inheritance. But even with Bruiser or Crafty, which have (redundant to DH), he could still play it for 4 resources.