hahaha ya the names confused me at first to
darkbasic classic and darkbasic pro are 2 different things completely so you don't Literaly "Upgrade" its completely different software.
dbp is 69.99($) and thats all you need i'm not sure what the 14.99 thing was about or the 39.99 but heres the link to buy darkbasic pro
http://darkbasicpro.thegamecreators.com/?f=order
and the bundles page if you want extras

hahaha
http://darkbasicpro.thegamecreators.com/?f=order_packs
hope that helps oh and i just read it the 39.99 one is darkbasic classic the 14.99 one is darkbasic lite(not sure what thatis) and 19.99 one is the enhancment pack (not sure if you said something about that) and the electronic just means you download it you don't have a physical cd and box. you can optionally buy it in a store if youcan find it.