Agree with most people here who are saying the monetary value is not the "prize" , so it's really just a "for fun" puzzle if someone feels motivated for a technical challenge.

Starting points for someone trying to crack this would be to look at what can be excluded

There's only 35 unique symbols (of 58) used, meaning 23 can be excluded from combination/permutations.

It appears to be a compressed public key format because it's 52 characters in length, so your pattern with start with: L or K (not a 5 for uncompressed)

You can reduce the target length by a few characters because you don't need to "crack" the base58 checksum, this should reduce the search complexity by a few orders of magnitude... but it is still a pretty big one at that!

Good luck, if you solve it you should post back here and share any "shortcuts" you took in attempting to solve.