Cap Collector

Cap Collector is a perk in Fallout 4.

Effects
The first and second rank stack multiplicatively, giving a total bonus of 32% (1.2 * 1.1) for selling and discount of 28% (1 - .9 * .8) for buying items.

The final level of this perk allows you to invest 500 caps into a store, immediately putting that 500 caps into their inventory and raising their total caps available by 500 for all future stock refreshes. This means that you can immediately sell stuff to the person and get your 500 caps back and still reap the future rewards.

To invest, enter the shop UI; at the bottom you will be shown an option to invest.

If you invest in the trading stands that you build, the bonus caps apply to all instances of that particular store across all of your settlements, meaning with just 3000 caps you can raise the available caps at all of the stores at all of your settlements, making this a very good long-term investment.

Собиратель крышек