they used to give them away free.. only used then it via facebook to document a few months of my 365.. looked ok - for a freebie!
I only used low res photos as these were all I had on FB from flickr account, so some a bit pixellated.. (could never get it to work to upload full size images)
for a freebie - fine, not sure I would have been mega happy if paying for them.. saying that, £3 isn't too bad really so might give it another go if I can upload full sizes as some of mine looked a bit pixellated