I have to apologise for my level of language as I am not a native speaker.
I have a huge issue here. I had a first stage interview recently. On that interview I was asked about my salary expectation. Because I was impressed with the company and a role more and more in a course of the interview and I really would like to get this job, I was unwise and mentioned X amount. I knew amount I mentioned is a bit lower than average on the market. When I come back home I did some more research and found out that an average on this position is 30-50% higher than I asked. Day later I had been invited on second stage. Now, the question is, whether it is acceptable to try re-negotiate salary level let say by extra 20-30% of that what I have asked originally.
Please could you advice
Thanks a lot.