So easy!
Now there a quality good centre in Vancouver,
Photoshop CS5 / CS5.5 圖像設計 (基礎課程)
free preview 1 hour ,don't hesitate,
hope this suggestions can help you.
Only CD$18
The responsible price [whatever that means] is whatever a full, legal version of PhotoShop CS 5 is offered for, at any reputable local Computer Software Retailer, and on Adobe's website ($999+), of course.
So, I'm guessing you saw it on sale at some unscrupulous website for <> $78. And, these are the websites that "common sense" tells you to avoid.
You must suspect that these 'products' are illegally PIRATED copies of the REAL APP, or you wouldn't have asked.