It is a shopping site similar to Amazon.com ( you can actually use your amazon log-in for purchases). Everything on the site is new, not used and has a few comparison prices for you to choose the one you want. I've enjoyed it because it isn't too overwhelming with tons of prices but still lets you feel like you are getting a good deal. The site is well formatted and really organized. I have bought many seasons of FRIENDS DVDs on Mojella.com and have been very pleased!!
There is also a section for most popular items by category as well as new items added to the site. This makes it fun to go on not only when you are looking for something specific but to browse as well.
It's for sure worth a look! You can also follow them on twitter and on facebook. They have great shopping ideas that are posted periodically.