Describe an item on which you spent more than expected. You should say

So what I thought when I went over my budget was my laptop. I bought it last year because I needed a reliable device to support my studies and also my career in the tech field. My first plan was to buy a budget-friendly laptop because I didn't want to spend too much money on [...]

So, one item that went over my budget was my laptop. I bought it last year because I needed a reliable device to support my studies and also my work in Tichfeld. My initial plan was to buy a budget-friendly laptop because I didn't want to spend too much money on it. My budget was [...]

One item I spent more than expected was a pair of earphones. I bought them for 700, which was much more than I had planned. At first, I only wanted to spend around 500, but I chose two expensive ones because they had great sound quality. I bought them because I needed good earphones for [...]