Ubercart

I'm not sure of a one page ordering module, but I don't think this is a situation where Ubercart just isn't useful. The question is, what sort of automatic recurring fees are you hoping to implement, and who do you want to process them through? Those can tell me real quickly whether or not Ubercart will work.

From a catalog building standpoint, it might make the most sense to break the products up by newsletter level. With the subscription type option (monthly vs. annually), you can make a price adjustment up for the annual subscription. You should also give different SKUs to the monthly vs. annual subscription types on the product's adjustments tab. When you do this, you can assign different recurring fees to the different adjusted SKUs, thereby getting different recurring fee settings for the different subscription types.

Keep in mind that the product price will be charged upon checkout. So, if I purchased newsletter level 1 annually, I would be charged $10 upon checkout, and if you want an automatic recurring payment, you'd set one up for the SKU of that subscription to charge me $10 in one year. It's fairly simple, I just don't think all the use cases have been documented.