Nope, it's the oldest.
It's all a bit silly, isn't it ?
How could prostitution exist before the concept of 'marriage' came about, and before the concept of 'money' ?
The profession of organized religion (ministers, priests, etc) had to come before marriage, or there wouldn't be anyone to perform the ceremony.
Here is how “me trade meat for poontang”. No “money” necessary.
Where's there a will, there's a way.