If you are really into all things baby and kids, check out this fresh and fun website: http://www.coolmompicks.com/. Every week, the site presents online deals for the sandbox set.
Even if you're not looking for your own sticky fingered sweeties, you'll find great prices on gifts and other gear. If you sign up for their weekly email, the deals come right to your inbox. Cheap and cheerful, just the way I like it!