The phrase "at that level even" is correct and usable in written English.
It can be used to emphasize a point or to indicate that something is surprising or noteworthy at a particular level of comparison.
Example: "I didn't expect him to perform so well at that level even, considering his lack of experience."
Alternatives: "at that stage even" or "at that point even".
At that level, even the seriously rich agree that you are rich.
At that level, even a $20 price cut can move markets.
Total expenditure jumped from 36% of GDP in 1999 to 41% by 2005 and then stayed at that level, even though the economy was growing fast.
The allegations came when he was at the height of his playing and earning powers – he was in his third season in the Championship and felt he had proven his ability at that level, even though Barnsley were ultimately relegated.
When you race at that level, even if it's just for a year, you can race one tooth bigger than everyone else" – in other words, spin a higher gear and go faster.
Partnering with Klout, Wahooly has amassed 30,000 users to date, and as the startup is still in private beta, Severson says that they've capped the user base at that level, even though the wait list continues to grow.
What is helpful about that model is that it shows how cooperativity can appear through selection at that higher level, even where there is competition between individuals at a lower level.
And that means that at some level, even if subconsciously, we are also beginning to realize that the well-being of animals is tied to our own.
EEA[29] reports that ozone concentrations remain stable at a high level even that precursor emissions have decreased considerably.
Campaigners are adamant that exposure at any level – even a seemingly low one – is potentially lethal.
The other worry for Henman is that at grand-slam level even when he's fully fit there is always someone who can outmuscle him.
