The market in question is the one where customers could bet on who they believe will be the WWE Champion at the close of the PPV. The last prices I have are:
Jinder Mahal +170
Shinsuke Nakamura +165
Baron Corbin +175
The Field .vs. Nakamura -215
Despite being +175, Baron Corbin's odds had been declining throughout most of the time the market had been available. To highlight how far he has fallen, he was out at +1,200 a little over a week ago. This was before he post-match attack of Shinsuke Nakamura on last week's episode of Smackdown. From there, his price tumbled.
The two match markets that were on the board are still available. However, the odds remain as they were previously. You can view them in the image below:
5Dimes' WWE SummerSlam odds are found under 'Other Sports' on the betting board on the 5Dimes Website.