I think its one thing to fake a LV purse it's another to fake a Tumi roller suitcase.

I think buying from eBay is fine as long as the seller has good feedback. I make sure to read recent feedback, esp. if any is negative. I hesitate buying from anyone who has less than 99% positive.

Also beware of the prices on eBay and research what you can get it for offline. People sometimes overpay on eBay.