I have purchased two sewing machines and a serger on e-bay. All 3 were packaged well (one was not in original packaging, but, the seller did a great job anyway), and I purchased insurance for replacement if they arrived damaged. I think all were delivered by either fedex or UPS due to size, and were placed on the front porch with no evidence they had been handled roughly.
I think it's a gamble. Clearly one I was willing to take. Three times! I don't regret any of the transactions.
Good luck to you!