Written by Jeff Blake Updated May 28, 2026

Edit ticket inventory and prices from the Event Ticketing app, not from the Shopify product. When you edit an existing event, the inventory field defaults to Adjust by (a change to the current count), not Set to (a new total) — read the mode before you type a number.

Requirements: The Event Ticketing app installed, and an event that already exists.

Open the event

1. In the Event Ticketing app, go to Events.

2. Open the event, then click Edit event. (From the events list, you can also use the Edit row action.)

The event form opens with the Tickets section, where price and inventory live for each ticket.

Change a price

1. In the Tickets section, find the ticket and edit its Price field. Enter 0 for a free ticket.

2. Save the event.

A price change updates the Shopify variant. It does not change orders that have already been placed — Shopify records the price at the time of purchase.

Change inventory

Each ticket has an Inventory field with a mode selector to its left. The mode is the part that trips people up.

• Set to — the number you type becomes the new total.
• Adjust by — the number you type is added to the current count (use a negative number to subtract).

On an existing event the field defaults to Adjust by. So typing 285 into a ticket that already has 285 in stock makes it 570, not 285. To set an exact total, switch the mode to Set to first.

1. In the Tickets section, find the ticket’s Inventory field.

2. Choose the mode:
   • To set an exact total, switch to Set to and type the total.
   • To add or remove some, leave it on Adjust by and type the change (e.g. 100 to add 100, -20 to remove 20).
3. Save the event. The new level syncs to the Shopify variant.

When the mode is set to Set to, a caution marker appears next to the Inventory label — a reminder that Set to overwrites Shopify’s count.

“Set to” is the total, including tickets already sold

Set to is the grand total, not the number still available. Available to sell = total − already sold. If 100 are sold and you set the total to 285, then 185 are available. To make a specific number available, set the total to that number plus what’s already sold.

Per-date inventory on multi-date events

On a multi-date event, the Inventory field on a ticket sets the level across all of that ticket’s dates at once. To set a different level for one date, expand that date’s section and edit the ticket’s Inventory there. Per-date inventory fields show a (N left) count that previews how many will be available after you save, and turns red if the change would sell that date out.

Capacity events

If the event uses a shared capacity pool, the per-ticket Inventory field is disabled — inventory is controlled by the single capacity number instead. See Setting total event capacity.

Related articles

• One-time event.
• Setting total event capacity.
• Purchase limits.

FAQ

Why did my inventory double after I edited it?

The field was on Adjust by, which adds to the current count. Typing the total you wanted added that amount on top of what was already there. Switch the mode to Set to to enter an exact total instead. Remember that Set to is the total including tickets already sold.

Why does the app show different inventory than Shopify?

Shopify’s available count is the one that decides whether a ticket can be sold. The app stores the level it last pushed and does not subscribe to Shopify’s inventory changes, so the two can drift if inventory was edited directly in Shopify or by another app. When they differ, the event form shows a banner listing the affected variants with the Shopify number and a Use N link, plus a Match Shopify button to adopt Shopify’s counts in one click. Pick the Shopify value (or your intended total) and save.

I changed inventory in Shopify directly — will the app pick it up?

Not automatically. The app reads Shopify’s current available count when you open the event form and surfaces any difference in the divergence banner, but it won’t overwrite its stored level until you save. Edit inventory through the app when you can, so both sides stay aligned.

Why is the Inventory mode selector missing on a ticket I just added?

A brand-new ticket has no current stock to adjust, so it shows a plain Inventory field where you type the starting amount. The Set to / Adjust by selector appears only on tickets that already exist on a saved event.

Why is the mode locked to “Set to” on one ticket?

When a ticket’s count has drifted from Shopify, the app locks that row to Set to so you commit to a clear new total instead of adjusting a stale number. Pick the total (the Use N link fills in Shopify’s value) and save.

Can I change a price after tickets have sold?

Yes. A price change applies to future sales only; existing orders keep the price they were bought at.