Do you really want them "back at the table"?

In the news lately there has been a lot of hubabaloo about bringing the North (DPRK) back to the negotiating table. Whether it be the six-party talks or inter-korean dialogue, people seem to really want the north back at the table.
http://english.yna.co.kr/Engnews/20050516/630000000020050516173046E0.html
Two Koreas resume high-level talks amid nuclear row
KAESONG, North Korea, May 16 (Yonhap) -- South Korea promised Monday to make a new "important" proposal to help resolve the growing tension over North Korea's nuclear weapons program if the communist country returns to the dialogue table, Seoul officials said. The 31-month nuclear standoff was a key topic at two days of inter-Korean talks which reopened at the North's border city of Kaesong on Monday after a 10-month hiatus, they said."We told the North Korean side that if it comes out to the dialogue table, we'll make important proposals for practical gains in talks aimed at resolving the nuclear issue," the chief South Korean delegate, Rhee Bong-jo, told reporters after a series of talks with North Korean officials...

Ok, so they got to talk. I seriously wonder though, was any price paid? Was anything offered to the North to get them to come back to the table?

North Korea shunned direct mention of its nuclear program but "carefully listened" to the South Korean proposal, Rhee said after the main meeting which lasted one hour. He later met his North Korean counterpart, Kim Man-gil, privately.

So they came back... but didn't talk much. Ok, maybe they just came for the food?

Um... now that I mentioned food, it got me thinking. I was just joking about having a free lunch, maybe the DPRK guys got to try some new Lotte hamburgers or something but now I wonder if FOOD was more of an issue. I know that the Souths food aid has been in "slight" jeopardy and maybe the North had that dangled in front of them. Hmmm, we'll have to see if any news in the next few weeks hints at food aide.

Ok, I'm a generous enough guy. I give what I can, when I can. But I have to wonder, how long until you stop inviting some if they've walked away far too many times without a "thank you"?