I'm a mortgage banker. I have not had to many "escalation clauses" come through on my RPA's. My problem - How can you know the sellers agent or seller is being truthful?
I have seen a lot of appraisal contingencies being waived. Nevertheless, it a double edge sword. My borrower can waive appraisal contingencies and if they don't like the final purchase price I can always "kill" the deal based on financing. However, a lot of my agents have been using our "Next Day" appraisal service to keep the transaction moving quickly. Instead of waiting 8 to 10 days we can have the appraisal done "next day". Huge perk for selling agent & seller.
The market is hot & everyone has their bag of tricks.
Best of luck.
Castle & Cooke Mortgage
You see how this can get tricky and could open up law suits.
I would recommend that buyer just put forth their best offer. The best offer isn't always the highest price. Contingencies and timeline make a huge difference, as well as the type of financing, who the lender is as well as the agent representing the Buyer.
All the best to you in your strategies story.