Gent I work with wants to trade a DPMS complete lower with collapsible that is brand new for a Yugo AK that I own. Only have 239.00 in the AK. Would you do it?
The AK is going to be worth a hell of alot more than 239$ in the next couple years. How much does he want outright cash for the lower?
239 would be a perfectly decent deal for the lower, but it sounds like you got into the AK for less than its worth
Urge him to throw in more stuff! 
Edit: Pmags. 
I wouldn’t trade a Good Yugo complete rifle for a POS DPMS lower. Just wait for the market to correct itself and you will get a good lower again for 110-135.00. I only paid 135.00 for my Novekse N4 lower and that was in September/ October.
Ditto what Iraqgunz said.
Keep the AK, leave the DPMS with its current owner.