For those wondering what happened to Quick Shop Lite and Quick Shop Plus on Android Market, they have been discontinued.
In their place is Quick Shop Pro, which encompasses all of the features of Quick Shop Plus (without the ads) and is now free.
I have decided to consolidate all of the features and benefits of Quick Shop Lite & Plus into one easy-to-use app and I am now moving on to other projects.
I hope you enjoy continuing to use Quick Shop Pro. I still use it when I go shopping :)