I got one of the cheap Turnigy transmitter cases a while back for my FPV rucksack, its about £12 delivered and is a perfectly fine case to protect your transmitter, only issue is the velcro strap is held on with the weakest glue ever, my first one fell off the first time I pulled it tight.
I mangled the case trying to rivet the strap back on, I stupidly used a drill to make the whole, and the fabric covering the foam wrapped round the drill bit and ripped off about 10cm across!
I had bought a much more expensive Atomik case last week for new transmitter, which looked smaller, but its actually much wider so wouldn't fit in my rucksack or crates, so I returned that, and just got a second turnigy case which the strap had actually fallen off in the post, but I came up with a much easier and neater way to fix this.
Quicktip Turnigy Transmitter Case velcro strap falls off - quick fix and mini review (http://www.youtube.com/watch?v=MUYdfnX3CeQ#ws)