Additional premium? That's not a problem.

额外保险费？这没问题。

The additional premium is for the buyer's account.

增加的费用由买方负担。

We will reimburse you (for) the additional premium.

我们将付还你们外加的保险费。

Analysis of additional premium arbitrage operation.

分析增发情况下溢价套利操作。

I suppose the additional premium for the special coverage is on the buyer's account.

我猜想投特别险的附加保险费应由买方负担。