I like it too (really, thanks for the suggestion), but the pricing is way too high, by at least an order of magnitude. A single user might import 1000 bookmarks -- there's $10 right there.
Now that I've set up phantomjs (headless webkit) on a VPS per petewarden's suggestion, I can see what it costs to run a screenshot farm myself. A couple pennies per thousand images at most for bandwidth -- Linode's smallest instance can run a bunch of webkit instances in parallel just fine. I've already generated and resized almost 1000 screenshots since installing it all.
