IMO that would have been a "too high" price a year and a half ago. Now, 70 seems reasonable. It really boils down to whether you want to spend the $21k on this contract or not. This is the essence of what sets the market.
Could you maybe find one better priced if you wait? Sure. Would it be less loaded? Probably. Will someone else take this contract at $70 if you don't? In the current market, they may already have done so if it is listed with a major broker.
Remember that the same contract through Disney direct would cost $39k.
I think too often people get caught up in $5-10 on DVC resale without considering what they are really saving versus the direct purchase route.
In the end, it's your money. But for what it's worth, in my opinion you may have a long wait looking for something similarly loaded at or below that price point currently.