Can I be a part of more than 1 affiliate program on a site? -

For example if I have a site can I put affiliate links from amazon, wal mart, gamestop, eb games, and best buy on one site, like list a product and allow customers to click one of the 5 links on that page depending on where they want to buy from. Is this possible? Is it allowed by all five of these sites that I listed above?

99% of affiliate programs generate for the new A, less than 1% of minimum wage