There's definitely an unplanned potty training theme going on here today!
Right now you can pick up the highly-rated (can 478 customer reviews really be wrong?) Baby Bjorn Potty Chair from Amazon for $20.95. That's 30% off the list price of $30! It's available in White, Yellow or Blue at this price.
I can personally say that this is a fabulous potty seat! While it was a bit tall for Piper when she started her potty training at 18 months, it works great for her now. Haiden used it as soon as he started showing signs of potty training readiness, and he still uses it every day!