When my wife and I went to Egypt ~20 years ago and would be shopping for anything, we decided to test this exact thing out. We'd pick a trinket common to any vendor, like a souvenir pyramid, or a ceramic bowl. We'd pretend to not know each other, and my wife would ask the price in English, and I would ask for price in Russian. Russian price was typically 1/3 that of English. And that's the starting price, to be bargained down.
After the test, all of our souvenir shopping was conducted in Russian.
When my wife and I went to Egypt ~20 years ago and would be shopping for anything, we decided to test this exact thing out. We'd pick a trinket common to any vendor, like a souvenir pyramid, or a ceramic bowl. We'd pretend to not know each other, and my wife would ask the price in English, and I would ask for price in Russian. Russian price was typically 1/3 that of English. And that's the starting price, to be bargained down.
After the test, all of our souvenir shopping was conducted in Russian.