just last week i was able to get a /23 from $ISP as part of my transit purchase with them for one location, but you still have to explain and justify your use to $ISP (who in-turn has to explain/justify to ARIN). if you can't do that, it really is "just cuz i want it". like someone else said previously, that just doesn't work nowadays. so, due the diligence, or rethink your design.
if you can legit justify it, and particularly if you are doing bgp, there's really no reason why any worthwhile transit provider won't give you a /24.
