Tell me please if it is apt to use the phrasal verb in the following conext.
The tablet was expensive, but I don't regret buying it, because it is paying off.
What I mean is that the tablet proved to be very useful and it benefits me. By the pronoun it I am referring to the tablet, not to the action of buying. If I referred to buying, would the pronoun this be more appropriate? For example:
The tablet was expensive, but I don't regret buying it, because this is paying off.