Dodgy pricing

I am a JotNot user and like their other products. However when I went to send a single fax with 2 pages, quoted in the App Store at $0.99, I am prompted to pay $2.99 instead (!). This is not something the developer should have missed, being the entry price point and it classifies as dodgy IMO. Shame since this company could have been a bit smarter about its offering.

sismico about JotNot Fax - Send Receive Fax, v4.0