In fact I have a similar experience, I wanted to but a SAMSUNG GALAXY S for long so have been following the prices & offers closely.
Few days back I checked with some know dealers of Samsung like Ghasham, intertech, RP tech Lulu & Dreams etc. and this phone was priced around QR 2499, but when I checked the prices yesterday I was shocked to see that the prices went up like anything –

Galaxy S was before @ QR 2499, today @ QR 2699
B7722 was before @ QR 1100, today @ QR 1199

While I was wondering what may be the cause I saw the Qatar Airways promotion ad & your message now, so it’s a clear case of cheating the consumer by increasing the price by 100-200 QR and then putting a promotion in t so that when a lay-man/ consumer compares, the perceives a very high value of the promotions which is not there at all.
Man they think they are so smart, I don’t mind but why do they take the customer to be a fool!!