Anyone play badminton?
 

I've been playing since the start of this year I think, and the racquet I'm using is the Yonex Armotec 700. I switched over to badminton from tennis mainly because I couldn't find my coach anymore It's a pretty fun sport, one that's easy to pick up, but a little harder to master.
I was flicking through my froogle search and found this:
http://www.opentip.com/product_info....ducts_id=46679
http://www.opentip.com/images/imagec...431_100_71.jpg
E-4431 Training High Quality Feather Shuttlecocks

Anyone play badminton can help me to make a judge of those Shuttlecocks?
If they can last longer in training or advance I think it is pretty good deal(bascially $0.8 per shuttlecock) compared to other brand at it's price.

but as I've never played with them before I have no idea of their performance, does anyone have any experience with these shuttles at all? Any help would be appreciated, thanks!

I have no experience with these shuttlecocks, but there are general ways to a) test a shuttlecocks durability, and b) extend the life of most if not all shuttlecocks.

Unfortunately, since this is an online store, you have no way of actually seeing them before you buy them. So my advice is, beware of what you're buying. Although in some cases, you are paying more for the name (ie: many yonex items are quite pricy in part because of the name), there are times when cheap stuff really is terrible.

Best of luck