Just putting in my penny's worth in support of mullyteelin, sorry to hear of your bad dealings with MP4nation . I decided not to buy from this trader for the following reasons:
1. MP4nation is no longer a registered user on eBay for obvious reasons.
2. Items currently sold by them on their website, are heavily discounted and up to 40% cheaper than identical products sold by power sellers on eBay, why!
3. This tells me their items are either not new, or worse non-genuine.
I can't vouch for their poor service, but I usually test the waters first before any intended purchase. Ask a technical or shipping question by email to the seller and wait for a reply. Give them say 2 to 3 days to answer and if no reply forthcoming, take your business elsewhere.
Golden Rule 1:
Always Google and scan the net before any intending purchase with any seller on the internet. For example type after MP4nation, "scams", "beware", complaints, emails etc.
Results on MP4nation, show pages of discontent customers, with warnings for everyone to stay away.
One thing for sure, the power of word of mouth on the internet, will eventually bring down unscrupulous traders.