0.18$ that's the price with discount or without it?
No this price does not include discounts. Discount is generally the right decision.
To attract first investors during IEO there are discounts. First investors have the biggest discounts during tokens sale but the biggest risks too.
All the same, for the first investors who buy a token with a maximum discount, the risk should be less. I do not think that the token after the start of sales will fall below the minimum discount price.
Usually after the start of the listing of exchanges bounty hunters sell the tokens to get some payment for bounty. That is why the price of the tokens fall. It takes time to restore the price of the tokens to the nominal price and growth of the price.