Only 2 things can be said about IMEI unlocks. One, "don't trust, don't buy". Two, "buy at your own risk." I've bought over 200 IMEI unlocks for my company's employees (their personal ones and some corporate ones), 95% being off of eBay and the last 5% off of other sources. I've had absolutely no problems whatsoever with any of them. They can't exactly do anything with just your IMEI number alone, nor will they want to. For $10 per person, all they're doing is copying and pasting in 2 sets of numbers, I'd do that.