Warning warning!!
Walk the other way.
20g is at the top end, 15-18 around the norm these days, I've seen as cheap as around 14 but 24 is a gaping hole to swallow you up, and remember you STILL pay for it.
Rip off merchant pr1cks!
They'll crap on about how it cost them this or that to get the approval to do it but how can you charge that? Pr1cks!!
I feel better.