So, I 'm assuming with the way that is worded, you don't want this card to work with gaining from reactions, such as this card or Trader? This means it can't stack on itself to gain something worth $2 or more than what was originally gained?
Also, the wording mentions that I may gain a card costing up to exactly $1 more, and the card only returns if I gain something. So if I use this card against a Curse and choose not to gain anything, it doesn't come back. Am I assuming correctly?