Damn! The 50mm f/1.8 lenses with shipping and tax pretty much kills the deal. I found a really good one on craigslist just for $50. So tempted to go craigslist way.
With all refurbs lens and DSLR, Canon has a 1 year warranty. I think this makes up for the shipping cost. I think I paid $70 out the door when I bought the nifty fifty alone.
I contacted Canon, they are automatically going back 1 year in their system for warranty claims. That means, you will not need to call and ask for them to increase the warranty period since the process will increase the warranty period to 1 year, vs 90 days. Their phone customer support was very helpful too. Thumbs up to Canon.