Ebay brush set?

Hey there, so I've been looking at these brush set on Ebay, and they look like they're pretty good quality. I've read the feedback on the sellers page and it seems like a lot of people are saying these are comparable to higher-end brushes. Does anyone own these ebay brush set? If so, how are they? Are they soft? Any fall out?

Here are some links:

28 pcs GRAY SQUIRREL HAIR Mineral Makeup Brush Set+Gift - eBay (item 130268586178 end time Nov-15-08 09:40:00 PST)

22 pcs GOAT & PONY HAIR Mineral Makeup Brush Set+Gift - eBay (item 140281472322 end time Nov-15-08 09 00 PST)

40pc Pro-Quality&Quantity makeup brush Liquid FREE SHIP - eBay (item 280275446177 end time Dec-07-08 22:23:06 PST)

there's a lot more but these are just the example of what I'm talking about.

Ive always wanted to get some off ebay. I hope someone and give you some insight!