The one thing a cheap tent won't stand is wind. The cheapo Colemans and Eureka's seem to fold up at about 30 mph. I camp and fish a lot on the coast and after a good wind comes up, lots of the campground is flattened and the dumpsters are filled with Wally World tents. He may be way better off using a tarp and some netting and a bit of practice setting up. Used, would be another option. I guess it doesn't matter if you're not going in to anywhere more than a mile or 2 from the road, but after that cheap can get very uncomfortable. He'd be better off staying small, like no more than a 2 man. 100 bucks for a 4 person is really pushing the envelope.
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Charlie