Questions & Answers about Я торгуюся з продавцем за кілограм моркви.
Торгуюся means I bargain / I haggle / I negotiate, usually about price or terms.
It does not simply mean I buy. It also differs from торгую from торгувати, which more often means to trade, to sell, or to deal in something. So:
- торгувати = trade, sell
- торгуватися = bargain, haggle
The -ся is the reflexive marker, but in many verbs it is just part of the verb’s normal dictionary form and changes the meaning.
Here, торгуватися is the standard verb for to bargain / haggle. You should learn it as a whole verb, not as торгувати plus a separately translatable -ся.
In this sentence, торгуюся is the 1st person singular present form: I bargain / I am bargaining.