I'm not seeing a current/active seller with thread that has MLH 2015 Hackathon Season codes that work till: DEC 31, 2017 for 5 dollars on Autobuy.  I just don't see any single sales in that area.  I see one with 10 dollars, and one with over 7 with only a few left.

I'm not counting bulk as bulk customers do get discount.   But I believe this is cheapest single buy for these MLH 2015 Hackathon Season codes that work till: DEC 31, 2017 currently that I see.  I did change title just in case ....  But again I believe I am cheapest Autobuy going.

Not all codes are equal there were some Angelhack and LDV summit codes but expiration was much sooner.   This is 100 percent MLH 2015 Hackathon Season  codes being sold which had the longest expiration date, giving most amount of time to use promo.