Do you understand the Annual Cost and Charges Statement?

Recently I saw the Annual Cost and Charges Statement for the first time and was very surprised by it.

I got $1,500 in costs and I only hold ~$300k in ETFs with low expense ratios.

Besides converting EUR/USD and buying ETFs I rarely do anything else. I occasionally make use of margin. I never sell anything. I got the Stock Yield Enhancement Program enabled.

Can anybody explain what might explain the high costs?