No this was without the require exact age match and it's waay screwed up. However, when I tick the exact age it seems much more accurate, which is a big plus, lol. Still though - both their estimated reach and also the suggested bid for many identical demos seem a bit random. Good job FB :arcadefreak:
If you don't tick 'require exact match' they include a range of +-5 years.
So when you target males aged 27 you're actually targetting males 23-32.
protip: don't fuck this up on a campaign that requires over 18s traffic only.