Lyon, that comment was kind of rude. Wire cages do not hurt a rabbit at all. they barely put any pressure on their back feet while sitting on it. In fact many of mine will plop on it like they are very comfortable.
I agree that those bunnies are too young to be away from their momma. Young bunnies should never be sold before they are four weeks old. I would suggest getting your next rabbits from a good breeder next time. Someone that can tell you how old they are, what breed, what they are mixed with, if they are pedigreed, showable, etc. And always ask the person selling them a lot of questions. And especially at a swap meet. You wouldn't believe the amount of animals with problems people will try to slip past you at one of those places. Normally they are not regulated. They let you sell anything, of any kind, at any age at them. You just got to learn to sort the good breeders from the bad at them.
Since you are interested in rabbits, I highly suggest getting involved with purebred animals, and showing them at rabbit shows.
www.arba.net. Good site. Also great for beggining rabbit owners and breeders. Look under the faq section on the right hand corner of the site. ARBA shows can also be an excellent learning experience. You learn to show, and compete your breeds against other breeders within the same breed. Most of the breeders and judges are really nice,and shoul dbe willing to answer any questions you have. There are over 47 different breeds to chose from at these shows. Most are very popular. Whike some are extremely rare.
Also abut towels. don't use them. Not only will the rabbits pee all over them, but they can injest them. it can block their intestines and kill them.