While you can buy cheaper cables, I have owned 3 of iOrange-E Micro USB cables for half a year. The A port is reversible. and they are very durable because they are nylon braided. What I bought were 1ft Black, 3.3ft Blue, 6.6ft Green. I bought these for $10.99 but now it's only $5.99! The lowest price I've saw.
If you want to get cheap cables just check out iOrange-E's at amazon US.
If you want to get cheap cables just check out iOrange-E's at amazon US.