Hilarious timing (just not for me) on this post... I hadn't responded regarding the S7 fares because I was given a quote from S7 for around $3200 usd a few weeks ago for a DONE5 and didn't want to jinx it... I was finally given a Booking Reference on September 20. When I called to make payment on the 22nd they said they were having issues with the price... I checked EF and figured that the doscussed increase was the problem. I have emailed and called a few times since then but have not received a straight answer... my guess is that I am out of luck, even though I had already picked my seats for the first flight in November!