Where is the best place to buy a new Knight Stoner SR-15 Carbine?  What kind of money should I look at spending on one?

if you have to ask, you cant afford it.

Any dealer should be able to get one for you.  I usually see one at most gunshows over 250 tables.  I have seen them as low as $1400 and as high as $1800.

I had one for a while.  If was made very well. Shot great, looked good. But I hated the fake flash suppressor and finally traded it for a new preban Colt with a M-4 upper.  Essentially the same gun with a real flash suppressor.

I have a friend who has one for sell.  He wants $1600 for it.  It has about 200 rounds fired in it.  He has had no takers at $1600 if that helps.

I got mine at Impact Guns (www.impactguns.com).  They treated me well and had very good customer service--very quick to respond to questions.