I believe you will still need to be able to justify the need for the address space to complete the transfer. "Justifying" a /24 should not be difficult.
(I've owned a /24 since the early 90's...)
In every recent case I've seen (over the last six years), no broker has had ranges larger than /24 for reassignment. Of course, you can do with just a /24, but the justification process has also grown somewhat more stringent, as a pure traffic engineering justification ("We need BGP; here is why.") is no longer enough, in my experience.
If you want to "own" a few addresses to play with, it is not technically possible. If you want a small block, you should just get a VPS that supports multiple IPs and tunnel them back to your location.
Or with azure?
Last I checked, Azure didn't let you do external BGP announcements but I may be wrong...