Four of Us
I've just gone through the same issue, not wanting to pay $700-$800 for a bit of plastic on a car (R51 Pathfinder) that is now 8 years old this year. In addition, I didn't want to pay for a snorkel to go through water (any deep water crossing would ruin the Expanda) but just needed it as I have a bigger exhaust & want more power.
I "bit the bullet" so to speak and bought an eBay special for $100 about a month ago at worst thinking I'd sell it again and loose about $50 bucks, or would just take it to my local 4WD shop who said they would fit it for about $250-300 (still better off!!).
Anyway after some "playing around" with the snorkel, template etc I just decided to give it a go. Cutting the hole in the side of the guard is the worst, but after checking numerous times got the snorkel in no worries at all and it fits/works perfectly. Even did the plastic bag over the end trick and stopped the engine in doing so.
Since putting it on my car I've just discovered that the snorkel I'd bought is actually an exact copy of Safari only $$$ cheaper - I didn't mean to buy a rip off but the quality, down to nuts & bolts etc, is identical.
Only advice I'd give in buying a cheap one is make sure it comes with a good template and also a gasket between the snorkel & guard - you'll find those a few bucks dearer, which I believe is because of those two reasons.
Taking mine for it's first trip this weekend with Expanda in tow to check for any improvement, but I can feel the difference without anyway.
Good Luck.