catch-22
There’s a catch-22 for wine lovers who have really caught the bug: The more desirable a wine is, the harder it is to get. And the harder it is to get, the more desirable it is.
Ed McCarthy and Mary Ewing-Mulligan, Wine for Dummies, 4th Edition, Wiley, 2006.
catch-22 n
1) a situation in which a person is frustrated by a paradoxical rule or set of circumstances that preclude any attempt to escape from them
2) a situation in which any move that a person can make will lead to trouble [CED]
Catch-22 n [U]
an impossible situation that you cannot solve because you need to do one thing in order to do a second thing, but you cannot do the second thing until you have done the first:
It’s a Catch-22 situation ー without experience you can’t get a job and without a job you can’t get experience. [LDCE]