If you have the skills or know someone who does you can do a gel insert in the stock seat for much less and have what I would consider a much more comfy seat. The gel and memory foam to finish it are available on Ebay fairly cheap. The job is easy if you reuse the original cover.I don't have the website for the how to anymore but I have all the instructions with pictures and all.

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!