Ted, I would baulk at a yearly fee, but not at a monthly fee that amounts to the same, yes I know it doesn't make sense, but i get paid monthly not yearly so its easier to budget for.
I guess this is why mobile phone companies charge by the month too, would definitely focus on a monthly sweet price point rather than a yearly one (though would offer a slightly discounted yearly one too of course)
It answer your question, in USD 10-15 per month, depending of the exact details of what was on offer (and how shiny the website was).