[ChadC]

I'm looking for a bit of a unicorn here...
 
I need headphones with the following features in order of importance...
 
1) Open back
2) Single sided cord
3) Portable
4) Under $100
5) Over ear (preferred, but I'll accept on-ear at this point)
6) Fold-able/collapsible
 
The only ones I've seen that offer this combination are the Behringer HPX2000, and I was hoping to find something that was a bit nicer looking.  I have the Shure SRH144, and they're mostly what I need but they lack the single sided cord.   
 
 
 
And recommendations?

 

[HipHopScribe]

If you don't mind buying used, you can find the Philips L1 for under $100 on Amazon (or the Philips L2 for a bit more). They meet all of your criteria, except the don't fold (the earcups do rotate so they can lie flat) 

 

[ChadC]

Unfortunately, I need about 200 of them.  

 

[HipHopScribe]

I see. If on-ear will suffice, the Sennheiser PX 100-II are worth a look

 

[kelnoky]

The Sennheiser PX-100-II is your best choice, I think. Cheap, fulfill all your requirements except the over-ear part and have excellent sound.

 

[serman005]

If you are looking at open in that price range, I would steer you to the SHP9500. It meets most of your criteria and really sounds terrific. You might check it out.

 

[EthanB]

I would also recommend the Philips SHP9500s, they are great sounding budget headphones, are well built, and meet all your criteria except being able to fold. 

 

[ProtegeManiac]

  Unfortunately, I need about 200 of them.  

 
Just out of curiosity, why such a bulk order? And in any case if you get recommended something that is higher than your budgeted per unit price you might be able to approach the manufacturer or distributor for a discount considering the bulk order.