Lost a key

Because I still have a spare one nearby
So I wasn't in a hurry
Before the Spring Festival, I passed by a key stall
Asked about the price, and they said 15 yuan
Since I didn't have the key with me at the time
Just asked and considered it done
Today I found a key copying shop near the vegetable market
It didn't look very busy
So I went in and asked the owner about the price
The owner took out a device and measured for a while
I was surprised and asked what he was doing
The owner said your key has a chip, it needs a special process
I said what? This is just a regular key, no chip
The owner immediately said, in that case, it’s cheaper, just 50 yuan
I said, well, thank you then
Now I understand why your business is slow...
The owner was very angry
Asked me what I meant
I said, that’s what I mean