Is this a good GND Filter

Is this a good product for the price? I'm not looking for anything fancy, just something to do a few landscapes with. Thanks...

http://www.amazon.com …GLK/ref=tag_tdp​_sv_edpp_i

No. You don't want a circular GND; you want a rectangular one. If you get a circular grad, you'll need to adjust your composition to where the filter puts the grad. If you get a rectangular one in a Cokin holder, you adjust the filter to put the graduation where it suits your composition. But Cokin's filters aren't truly neutral; they have a slight (magenta, IIRC) cast. HiTech, Lee or Singh Ray make better grads that are truly neutral (at a price).