Your two biggest options are Fox Soccer Channel and Setanta. Setanta just became FSC+ ("plus"), so now the two are FSC & FSC+. I'm pretty sure both are on different pay subscription packages through your satellite or cable provider. The costs would vary depending on who your provider is though, i would imagine.
I've seen Everton matches on both channels, but i've seen more on Fox Soccer. FSC+ is rumored to be in HD, but today is their first day of broadcasting so i can't confirm this yet. Fox Soccer is
not in HD, so the thing you might have to adjust to is not watching matches in high def. And no, i have NO idea why on Earth it is taking so long for us to get your feeds in HD, especially when we have all sports here in HD now.
Oh, on direct tv fox soccer channel is part of the sports pack which is $12.99/month (USD), and the FSC+ (ex-setanta) is $14.99/month. Prices are similar on Dish Network i believe, but i have no idea about cable.