If you are the one selling the items (full price or on discount), you keep it to the one sale topic that you have already started for your business (this topic) as an update to your inventory or business, NOT start a new topic for each new or discounted item.
Plus, half your post was promoting your business (not just advertising the "discount" toy), which could be seen as spamming with multiple topics to advertise the same business.
These rules are rather strict because we don't want businesses to abuse the concept of free advertising here.
If there are any queries or uncertainties, just contact one of the staff.