Brian,
First let's keep in mind that I am not TRYING to sell anything. You asked me:
"since i know u sell these, how much are they?"
I explained to you that I would have to order the filter from Magnefine for the same price you would be paying yourself.
As I stated in the PM I sent you earlier, the filter shipped from Magnefine is ~$20 (15+ tax and shipping). The clamps and hose could probably be bought for around $5-$6. The trouble I would have to go through to package, ship, and follow-through is an inconvenience to me, hence I believe $20 for shipping, handling, clamps, and hose, is very reasonable.
Like I said earlier, I encourage people to buy their own hose and clamps - but there will always be those that would just like the whole thing sent to them in one easy package.
Again, I want you to understand I am not trying to sell anything, I am only offering the kit because I believe in the product and I know sometimes people can be uncertain about which products to purchase.