I picked up Shopgirl some time back - on a whim - via paperbackswap.com. I was ordering several books from someone else and found this on their list. Martin's films are hit or miss for me, but when they work they're very funny. I figured it couldn't hurt to try his prose.
I was right - it didn't hurt - but it wasn't all that enjoyable either. In fact, I think Shopgirl qualifies as "chick-lit" written by a male. It wasn't all that interesting, the major plot points were predictable, and I didn't buy the development of at least one of the three main characters. The other two main characters really don't undergo much development at all, leaving me wondering what the point of the story is.
The cover claims the book is "Now A Major Motion Picture" like that's some sort of recommendation. It wasn't for me. I had no clue that was the case when I requested the book, and I have no desire to see it now.
All in all this was mostly a waste of time and paper.