KGB,
Fleabay can be an extremely good source of of good quality equipment, but as Scrun 63 says there are some unscrupulous people out there, so one has to be careful. I use it for all sorts of things and I think one has to be a little realistic and not expect something for nothing. There are good deals to be had, but fewer true bargains. On this particular seller I'd say 'No'. He's actually not allowed to not accept returns under distance selling laws - and from personal preference I dislike poor grammar in ads - it makes me uneasy. I also doubt the true ability of any glass to give 9x mag - if it were that easy, Swarovski and the like would all do it. I'd ask the standard two questions - what are you going to use these binos for and what's your budget. Many will say that you should spend more on bino's than anything else as it is what you will look through most!
There is a seller on eBay who does some pretty good Bushnell bino's at a reasonable price - I'll see if I can find them when you have a mo, but look to brands where you can and push your budget as you'll really appreciate the difference.
Feel free to PM me for more details
E t R