E.g. pictures for items and/or for customers
Maybe the buttons themselves are / have pictures.

Some sort of a display to see what items you have on offer already would be nice.

• Show the current date.
• Ensure clock works across days.
• Allow the shop to be open only between 8am and 5pm.

Sell both swords and trail mix from customers - with each customer having a different preference.

• Ask the customer for money
• Offer multiple items for that money
• Customer has a purse- they can't spend more than that.

This will be useful for auto-scroll and playing sound effects (maybe animations), networked multiplayer and, importantly: saving and loading the game.

https://thoughtbot.com/blog/bridging-elm-and-javascript-with-ports

• More reputation means that customers show up at a faster rate.
• Perhaps more reputation means customers are willing to pay more (long-term, would want higher-tier customers to show up).
• Get extra reputation by having happy customers leave.

Purchase items after-hours to sell the next day.

For now:

1. Show the customer name and basic description,
2. Record whether the customer has been "inspected" or not. If they have, also show the additional description and the max price.

Intro message and a description on a description button.

Customers have certain properties to them, and you can compliment or schmooze them based on what you know about them. E.g. compliment hair, physique, weapons, armour, separately depending on what they seem to be interested in.

Customers should give away some information about themselves that reveals how much they're willing to pay - perhaps via a conversation option (that takes time).

Still some bugs in the way the time of next customer entry is calculated.