Ugh... This Karrot Market transaction is so awkward. ㅡ.ㅡ

I bought a Schecter Les Paul type because I wanted to learn electric guitar..
(Just because it looked cool)
But since I bought it without knowing anything, even though I can't even hold a fretboard yet,
it's much heavier than I thought..
Since I'm a total beginner, it's a bit much to keep carrying it back and forth to the shop,
so I was browsing Karrot to find a very cheap, lightweight guitar just for finger practice to leave at the shop.
I saw a Cort G250 posted for 80,000 won, and after searching, it's a decent guitar for beginners.
The price was 80,000 won. It said "Price Negotiable," so I threw out an offer of 60,000 won.
I wasn't really thinking much. It's not like I was desperate to buy it.
Then, after working for a few hours, I saw the chats..
They had piled up like crazy.
"I've already lowered the price a lot, could we please do it for 80,000 won? ㅠㅠ"
An hour later
"I'll take 10,000 won off ㅠㅠ"
A few hours after that..
"I'll give it to you for 60,000 won. I'm in urgent need of cash ㅠㅠ"
Even though I hadn't even replied, the seller kept sending messages on their own.
I saw the chats on my way home from work and told them I'd do it for 60,000 won, so I went there..
Sigh ㅡㅡ
The seller was a middle school girl..
ㅠㅠ
She's having kids so early at that age... and here I am, feeling bad about taking 20,000 won from her..
I lose tens of thousands in the stock market in a single day..
But 20,000 won..
The moment I saw her, I felt so awkward that I just paid and left immediately,
but I'm still sitting in my car contemplating this.
The guitar is in much better condition than I expected. Would it be weird if I sent her a message saying I'll bank transfer an extra 20,000 won? I wonder how she'd react.
Argh ㅡㅡ