How do the deals work? [ Edited ]

[orcadragon17]

I decided to get one of the special deals for $5.99 and assumed that the game would always have a special deal. Only now that I bought one... the ad for a deal is gone! Is this the one and only deal or will there be others... I would have picked more wisely if I knew it wasn’t always there. 

So have you noticed deals return after buying the first?

Tried to look up this information, but saw no articles on the topic. Only one article that voted the game as worth spending money on.

[iNotori]

I've purchased each deal that has been on sale. An offer appears, and you have a limited time to make the purchase.

If you had two offers of the $5.99 where you get two forms of currency, then I believe you get to only purchase one of them.

Surely, more deals will be offered in the future. 

[01Reinier]

I only noticed Izzy's Fashion Gem deal returning to me twice.
Never seen it again.