You get that one which you buy. And its not deposit, its investment. When you make irl deposit, you get back what you deposited. Here you upfront pay and get initial coupons + 6days of items. No ingots back.

Except for 1st 100ingot, its a really bad event. And honestly, even 100ingot one you are better off using 100 ingot to buy plunder/ss convoy and try your luck for a week- you will gain more.