Now that I think about it, SE could even add it into the chat log like this:

- Show sales made by retainer [1]
- Show all sales made by retainer [1]
- Show all sales made by retainer [1] ever 12 hours
- Show all sales made by retainer [1] ever 6 hours
(etc)
- Show sales made by retainer [2]
- Show all sales made by retainer [2]
- Show all sales made by retainer [2] ever 12 hours
- Show all sales made by retainer [2] ever 6 hours
(etc)

Something along those lines.