Subasta translates to "auction". It's an interesting and somewhat unexpected word to find in a romantic song, making it stand out.
In the lyrics, India Martinez sings, "Porque un amor bonito no se vende ni subasta" (Because a beautiful love is not sold or auctioned). She uses this word to emphasize that true love cannot be bought, traded, or put up for sale, highlighting its intrinsic value and purity.
"No Me Basta" is about loving someone who never quite lets you all the way in. The narrator feels like they're already in over their head, tiptoeing carefully so the relationship doesn't collapse, and they can sense something isn't fitting right even when their partner insists everything is fine.
The chorus compares the narrator to a puppet losing its own thread, or to a basketball player who never gets to take the shot. A love that only shows up halfway, they say, isn't something you can buy at any price. They still believe in their partner, but keep repeating that belief because it's the only thing holding the relationship together.
By the end, the narrator stops asking politely. They want everything or nothing, nothing that doesn't carry their partner's name, and they beg their partner to break their own chains and finally let themselves be loved completely. Halfway love, however sincere, still isn't enough.