100% correct, it's the lure of scoring the great deal that gets a lot of people into trouble with scams, and that's exactly what the scammers play on. Your instinct was spot on and you saved yourself a bunch a cash, hopefully this thread may well save some others as well from falling prey to a hacked eBay account..... fingers crossed!
I'll Just run through the warning signs of a hacked account for others.
1. The deal simply being too good to be true
2. The member requesting direct email connect, not through the eBay
3. Closing the transaction off eBay.
Always use the eBay message system and always close the transaction through eBay if you are not 100% confident in who you are buying from. If you insist on closing the transaction off eBay, then ensure you get the sellers PayPal id to make the payment and go to PayPal to make that payment.
Never use Western Union or use an invoice that they have mailed to you with any links, whether it has PayPal written all over it or not!
It's a great warning, scammers are everywhere, even eBay!