What is the ruling on benefiting from websites that book hotels and rent cars using the "name your price" method?

For the validity of renting an object, it is a condition that the object be known either by sight or by a description that removes any ambiguity. There is no objection to dealing with websites that book rooms or cars for a commission. There is also no objection to the benefit of the object not occurring immediately upon the contract, but rather being delayed, as jurists have affirmed the permissibility of renting an object for a period that does not immediately follow the contract.