When considering headphones, it's important to remember that they each have their own personality, much like a microphone. For instance, the Sony 7506s have a certain signature on the low end. Others have more high end and less low end, etc. No matter what the frequency response charts from the manufacturers say, each will sound different.
Also, though sometimes people forget this, "FOH" is a vague and moving target. The room acoustics, PA speakers / subs, mixer, and the way the sound guy dials it all in are huge variable that not only differ from PA system to PA system, but venue to venue (and even night to night depending on the crowd, humidity, etc.).
If your budget is around the $70 of the headphones you linked to, I wouldn't consider IEMs. The generic type that come with a transmitter, ear buds, and a few different foam cushions (or some such thing) to fit to your ear aren't going to be anywhere close to studio or FOH sound. The real differentiator with IEMs is when you can get custom mold earbuds. I've had both generics and custom (Ultimate Ears in my case, though any custom mold will give you the benefits) and they're not even on the same planet in terms of comparison.
So, the first real question is, "What, exactly, is your FOH sound?" Do you hire a sound company to bring in $100,000 worth of gear? Is it a pair of $50 bargain basement speakers on poles? Your guitar is obviously going to sound different in each scenario.
In truth, the only real way to know how headphones, monitors or IEMs translate to FOH for tuning is trail and error. In a perfect world, you could sit in the rehearsal room with the PA, play through it, then mute the speakers and compare to your headphones. But as everyone has pointed out, it's unlikely to find headphones that are going to sound like a live PA system at volume.
In my studio I use my IEMs when tracking vocals (great to eliminate the headphone bleed getting into your vocal track). When tracking guitar, I listen through my studio monitors. When I just want to play guitar and feel the hair on my arms vibrate, I plug into the DXR-10, crank it up, and just have fun. Overall, for recording I find studio monitors are a better feel than headphones (inexpensive AT M-50s) or IEMs.
Given your budget, you'll find a lot of 5" studio monitors in the $100 -$150 range. While better is always better, honestly the quality of stuff on the market these days is all pretty good. If you can stretch the budget a little, I think you'd be happier with monitors than headphones, and until you can get custom mold ears I wouldn't even consider IEMs.
That said, even though my choice for your situation would be studio monitors, the real trick is to get something and learn it. You'll hear studio guys talk about this all the time in terms of their monitor choices. They'll have the xyz brand, which may be old or new, expensive or not, but the thing they'll say most often is that they learn what their speakers sound like. If, for instance, they're just a touch light on bass reproduction, they learn that the best sounding mix for other consumer systems is when they dial back their bass instead of turning it up to compensate for the speakers' deficiencies. That know what the sound "in the room" will translate to in a portable mix. The venerable NS-10s sounded horrific, but the old guys learned what a good mix sounded like on them, so it then sounded killer when played on a set of good speakers.
This is where the trial and error comes in. Get something that feels good to you when playing guitar (because if it doesn't, nothing else really matters). Then listen to your FOH system, compare the two, and learn how to dial in your profile in your studio to sound the way you want through your PA system.
I know people usually just want a simple product recommendation, "Buy this and everything will be awesome!" However, life is rarely that simple, so if you give a little more thought to all the moving parts in relation to what you're looking to accomplish, you'll have a much better chance at finding something that will make you happy. And happy is why we play guitar. 
