I replaced the seats on all three of the toilets in my house. The old ones were too porous and and couldn't be cleaned. I'm not just talking about splash-back (gross, I know!), but I kid you not when I tell you that one of them actually was stained from the cleaner itself! The seats barely got four years of use.
So I went to Home Depot, where I saw the seats I already had. Like everything else the builder used, they were the cheapest seats they had, ringing in at $4.95 each. Me, I splurged for the $9.49 seats. :)
This kind of mundane shit used to bore the hell out of me and I never wanted anything to do with it, but for some reason I'm starting to take a little pride in my house. Now if I just had around $5k to replace all of the crappy carpet, and a tall ladder to paint the living room, life would be grand!