Price is important to me, but quality and comfort are even more important in the long run. Very thin fabric may be fine for summer but often looks cheap and becomes see through. I think this is one of the few real advantages we have compared to shopping blindly.
If anyone is interested in real user experiences, I sometimes write short notes about the shops I test.
You can find one of the pages here:
[url=http://eetest.souzouzone.net/index.php/member/38047/]
click here
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If they reply politely and give detailed answers, I feel more relaxed. If a deal looks too good to be true, it usually has some kind of catch. Sometimes I even measure an existing frame with a ruler before ordering anything new. Each material has advantages and disadvantages depending on season and activity. In the end it is all about finding what matches your own habits and lifestyle.
Just sharing my personal feedback.