> What’s the difference between cheap
> gear on ebay and expensive stuff
> listed elsewhere?
In many cases the difference is much like the difference between a Yugo -vs- a Toyota. Both are cars, one is cheap to buy (but often expensive to maintain), the other is more expensive to buy but has better design, features, is higher quality and will be more reliable.
Lets look at tents. Texsport is using fiberglass rather than high quality easton poles. A good easton pole will be lighter, more compact, more ridged, and take more force before it breaks when compared to fiberglass poles that ship with “backpacking” tents. What does this mean? In a strong wind an easton pole won’t deform so the walls of the tent will stay tight leaving room in the tent which helps keep you dry and comfy. If the wind is really whipping, a easton pole is much less likely to break. I have been with friends that have had a pole break in the middle of a storm 2 days in. They were not happy campers.
Higher quality tents will use better materials, have better stitching, will seal the seams (typically), and will have better designs (like using CAD modeling and do real stress analysis) to refine the design for maximum performance.
If I was looking for a good, cheap tent, I would suggest looking for a lightly used Sierra Designs Clip Flashlight.
If you really want to go with something like the Texsport bivy I would suggest you check on pricing in your area. These are often carried by sporting good stores. They retail for $34 which means they might be cheaper purchased locally realizing you don’t have to pay shipping.
On to backpacks. I am not sure if it was the same backpack, but a couple of years ago I was on a trip with a friend who has a backpack which looks just like what was in the ebay picture. He had used it on a few trips without significant problems. But on our trip one of the seams blew out and one of the straps ripped out. Some duct tape, rope, and a needle and tread provided an adaquate repair but this wasn’t wasn’t a lot of fun.
No matter how quality gear is, it can fail, but it’s a lot more likely with the cheap stuff. Performance of cheaper gear is typically not going to match the better gear. My $145 granite gear pack is *way* more comfortable to carry than any of the cheap packs I have seen (and more comfortable than a number of packs which are more costly as well).
My recommendation would be to stay away from any of the ultra-cheap equipment. One thing I would suggest is checking with friends to see what you can borrow, and see if there is any stores or clubs nearby which will rent high quality gear. For example, the backpacking club at Stanford will rent a tent and backpack for $15/week.
–Mark