I haven't bought anything from KP yet, but planning on getting some harmony options soon...... I have been gifted a set of bamboo DPNS (sizes 0 - 10 1/2 I beleive) that were 5" long..... I LOVE them. We got them for $10. (Yeah, I know.... Normally the giftee isn't supposed to know how much it costs, but my mom didn't know what I needed, so she told me to come pick something out.
I remember checking out the prices for DPNs at my then LYS, and I would have spent over $100 for the same needles (well, mine were "no name" but they were identical).
I really love mine and use them constantly, even for flat knitting projects small enough to cram on them.