I just did my plugs last summer so it'll be a while before my next change, but 3.25 seems to be a good deal. You could also try looking at getting Autolite APP764's, which sell for 3.99 in my area. I'm not sure what the Motorcraft sells for since the Autozone by my house doesn't carry the right ones and can't even order them. Motorcraft plugs are just rebranded Autolites anyway.
