diff --git a/design/sales.md b/design/sales.md
index dcf08cb..fdf02b9 100644
--- a/design/sales.md
+++ b/design/sales.md
@@ -170,11 +170,11 @@ state is validated.
 ### Sort order
 
 Slots in the queue should be sorted in the following order:
-1. Profit (descending)<sup>1</sup>
-2. Collateral required (ascending)
-3. Time before expiry (descending)
-4. Dataset size (ascending)
-5. Seen flag
+1. Seen flag
+2. Profit (descending)<sup>1</sup>
+3. Collateral required (ascending)
+4. Time before expiry (descending)
+5. Dataset size (ascending)
 
 <sup>1</sup> While profit cannot yet be calculated correctly as this calculation will
   involve bandwidth incentives, profit can be estimated as `duration * reward`
@@ -216,7 +216,7 @@ cause the slot to be ordered lower in the heap queue. If, upon processing
 a slot, the slot item already has a `seen` flag set, the queue should be
 paused.
 
-This serves to prevent availabilities that are small (in avaialble bytes) from
+This serves to prevent availabilities that are small (in available bytes) from
 emptying the queue.
 
 #### Pausing the queue
@@ -227,8 +227,10 @@ A paused queue will wait until it is unpaused before continuing to process items
 in the queue. This prevents unnecessarily popping items off the queue.
 
 #### Unpausing the queue
-When availabilities are modified or added, the queue should be unpaused if it
-was paused and any slots in the queue should have their `seen` flag cleared.
+The queue should be unpaused if it was paused and any slots in the queue should
+have their `seen` flag cleared, when:
+1. availabilities are modified or added
+2. slots are pushed to the queue
 
 #### Queue workers
 Each time an item in the queue is processed, it is assigned to a workers. The