This has been a recurring scam for at least two years. Once every couple of days or weeks, another account gets hacked, filled with all kinds of auctions for expensive items, like test equipment, guitars, etc, and stating somewhere either in the description or one of the pictures that you should contact them outside eBay. Generally eBay removes them within 24h. It's been quiet for a number of months, but it happened a couple of times this week.
Checking the description and pictures carefully should make it easy to spot. Also, I doubt if anything bad will happen if you bid on eBay, since the item will be removed before the auction finishes. Worst case they send you a message asking you to send money in a way that's not traceable and without the ability to get money back. Just don't email random people you have zero information of and send them money...