Basic browser games for children

My client is developing a site to educate young children from poor backgrounds. We want to implement basic games to maintain their interest in the website and deliver some basic educational information. These games would be for age range 3 - 8. The other condition is that these children are in a remote part of the world where web connection is poor so bandwidth is at a premium, the other reason we need them to be kept very basic and light. Here are a couple of examples of what we're talking about: [login to view URL] [login to view URL] Could you please quote the cost for 1 such game, though we mat require up to 10? Thanks Stephen