A few months ago I bought an ishoot trigger off of ebay for a whopping $17cnd. It worked about 90% of the time for the first couple months, which I could actually live with. Lately though, the performance has decreased and I have to be within 4' of the flash for it to fire. I have an E-M5 and a TTL Zeikos flash. I have really enjoyed the off camera shooting so I would like to upgrade to something more reliable but don't want to break the bank. With the Ishoot trigger I had to do all manual and it wasn't too bad so I can deal with that. If I'm going to use manual does that mean I can get any trigger? I was hoping to get something used for under $100. Thank you.