Multi item shop help

[Exxsamuari]

ok this guides all messed up i have tried to do this 6 times now and still not working, does anyone know the correct way to add this guide? i have read the comments on what needs to be changed and still good.
[EO + 3.0] [Updated 1.1] Shop improvements - multiple item cost value
http://www.touchofdeathforums.com/smf2/index.php/topic,81143.0.html
* or a better way than this because zerohero obvesly dosn't have his stuff organized and made sure it works himself