You can buy an extcy on ansgear for 200 right now, I just bought a 48/3000 guerrilla tank on amazon for 36 dollars and I'm sure you can find a cheap lightly used loader on eBay or something for 60 bucks, all of which adds up to less than the package prices you quoted. As for the rail, the only thing that's better is the eye pipe for maintenance. And the extcy has easy access eye covers, a better board that is waterproof and the on off Asa.
On the other hand if you're talking about approaching the 600 dollar range for a marker, just get an empire axe and call it a day.
Edited by Cyk101, 13 February 2014 - 06:59 PM.