I have vowed never to buy anything electrical from Ebay again... I have had a few things cark it on me now, including the breast pump I bought NEW

The only way would be if you are clear beforehand on what the procedure is if you need to make a warranty claim. If you can sort that out & be confident that you're covered...then maybe.

Otherwise, call around... I think if you Google Catalogue central you can do a price comparison to find the cheapest seller. Or call somewhere like JB hi-fi & see if they will price match, they usually will....