It looks like a very nice piece. It's really hard to get a positive attribution on a piece like this, as many companies made similar pieces. Probably any of the good companies could have made this, as they all had the technical expertise, and it's not a particularly individual design. The important thing is whether you like it and whether it's a quality piece. I can't answer the first part but it looks like it's good quality, something that Barbini or Galliano Ferro might have made.
It's easy to disparage eBay, and there are certainly some very reputable dealers around. However, I think this is great time to be starting a glass collection as I see some real bargains on eBay. What looked like a Barbini basket went for $29.00 last week, and a signed Luigi Onesto sommerso vase went for about $30.00. You have to trust your eye, not the seller's attribution, but do ask if there any chips, flea bites, or scratches. And you have to be prepared to make the occasional mistake.