Shoutout on 20mil followers network?

Hi,
I do not sell any shoutouts or promote some shoutouts. I will not give you any names.

I came across one network that has 20 mil followers on 7 accounts.
If you buy a shoutout on all of the accounts you will pay $1300 for 24h.
I saw on the SocialBlade that the average engagement rate is 0.09%.

If 0.09% of them see your post that is 18 000.
If 1% of those 18 000 buy your product that is 180.

Sell some trending viral gadget for $15 = $2700

What do you guys think about how much people will actually see your product on some shoutouts like this?

I do not encourage you to try this

The key here is not the hit and run sale. Yes you want to make a profit and cover the cost of the shoutouts ofcourse, but you should think about the upsale too. For example I am selling dog collar, once buyer added it to the cart they get a popup with upsell offer - add dog shirt for 50% off,etc.

I think that no one can tell you exactly how many ppl will see your offer.