The XTP I have here was $12 for 25 cartridges.
I’m sure its more than that now
The Buffalo Bore cast +P run about $25 per box of 25.
My only reason for looking at them is that I’ve come across articles questioning the ability of hollow points working effectively in .380 and 9x18 calibers (they don’t always expand). The articles have stressed penetration as being more important.
http://www.buffalobore.com/index.php?l=product_detail&p=220