Your completed purchases on the platform (orders that are no longer in progress) set how many item units you may have moving at once and the total USD of those open orders. From card authorization until the order is fully complete, each order counts toward both caps.

0 completed purchases → up to 2 item units in flight, $200 total in-flight USD.

1 completed → up to 3 units, $500.

2 completed → 4 units, $800.

3 completed → 5 units, $1,000.

4+ completed → 6 units, $1,200.

If you hit either cap, Purchase is hidden or checkout shows an error until capacity frees.