Sorry, I'm not doing the exact calculation. But you can sell your stuff and see for yourself ...you will get something in this range.
Just to clarify, let's take prices in ETH. Currently, UNI is priced around 0.009 ETH per UNI. So 400 UNI will yield 3.6 ETH. ETH is over 380 now. So that comes down to:
3.6 x 380 = ...wait, I need a calculator.
..it's $1,368
I think I should put at least 300 gwei to claim this gift :)