August 26, 2016 (edited) , 翻译为ZH (显示翻译) , 从EN翻译 (展示原始文件)
By the way to elaborate further, there are 5 Collections in total (6 if you include VirtuaGuy):
iStripper - 3K content formerly called VirtuaGirl HD
iStripperXXX - 3K formerly called DeskBabes
iStripper Classic - rebranded 720p and 1080p VirtuaGirl HD content
iStripperXXX Classic - 720p and 1080p DeskBabes Content
VirtuaGirl Classic - 480p content re-mastered from VirtuaGirl 2 recordings
To access all the 720p cards you need to have bought 40 or more cards.
The 480p cards (available when you already own over 100 cards) are really for collectors who appreciate the photosets and videos as much as the desktop shows as the clip quality is obviously restricted by the nature of the recording equipment. In desktop mode they are watchable and enjoyable but in fullscreen they don't look great.
If in doubt as to what 'extras' and discounts you get for growing your collection, click on the Question Mark symbol to the right of the word 'Silver' under your profile info to the left of this forum frame in the client. Then click on any symbol from left to right for details.