I think you got really lucky. From Merriam-Webster:
Full Definition of POSSIBLE
1
a : being within the limits of ability, capacity, or realization (a possible but difficult task)
b : being what may be conceived, be done, or occur according to nature, custom, or manners (the best possible care>) (the worst possible circumstance)
2
a : being something that may or may not occur (a possible surprise visit)
b : being something that may or may not be true or actual (possible explanation)
3
: having an indicated potential (a possible housing site)
Based on the definition of "possible" Priceline could have stood their ground.
Romelle