What if I don't agree with the rest of your post? Are you trying to collect "likes"
? I don't agree that the OP has to go out and buy kettlebells. I was just saying I like doing bent over rows with kettlebells better than with dumbbells. I prefer to do some exercises with barbells and dumbells over kettlebells, and vice versa.
If someone is looking for a single piece of equipment, buy a large and sturdy/well made duffle bag. Fill it with rocks, dirt, or whatever else and use that. If they're creative enough, they can do a ton of stuff with it. A bit of a hassle to fill and empty as needed, but dirt cheap. Around here, kettlebells are a little over $2 a pound. So a pair of 20 lb kettlebells will cost over $80.
And they're not too common on my local Craigslist. I've been waiting for some to come up so I can do Turkish get-ups with them (by far my favorite kettlebell exercise and one of my favorites overall). Still waiting.
I don't own very much equipment. I used to work at a college and had free access to their gym. The only equipment I have is a Century BOB XL, and my favorite piece of home gym equipment - the Total Gym XLS. What can I say, I'm trying to be Chuck Norris up in here. I've got to get a pipe and some 1" plates to add weight for a few exercises.