iPhone 5s case recommendation, a case with open top and bottom

Hi there, I'm completely blind so finding a new iPhone case is, as you might imagine, quite difficult.
If anyone could recommend a case brand that is open at the top and bottom so I can put headphones and a USB drive into my phone without having to wrestle it out of its case first, I would be grateful.
Also, I have seen a few but they're very expensive so if there are any that are less than $30, that will be good.

Forum: 

#1 Be careful on a price point

Hi. I just want to give a friendly warning. Yes, cases are expensive. My Otterbox is very fat, it also saved my last phone when it was dropped, cracked in the corners and the screen protector had a huge spiderweb. In fact the woman taking off the case, said, how the hell did you do this and survive? Lol. Anyway you also want to be wary of leaving it vulnerable to exposure. In other words, there's a ton of crap that can get into the holes of your speaker and the lightning port. Probably the headphone jack too. With most cases, both of them have a little rubber or plastic piece covering each of the phone's ports. You can probably just open them, leaving them open when you need t use them. It's a good idea to have them closed when you're not, see above grossness. :) hope that helps somewhat.

#2 The Otterbox Defender is

The Otterbox Defender is really great with a belt clip and very very rugged. Kind of bulky but worth it. The Otterbox conmuter is very protective but not as bulky. They both are spendy but you get what you pay for and the company's customer service is fantastic. I hopes this helps a bit.