Amazon offers Prime members the Little Tikes Count 'n Play Cash Register Playset, model no. 642500, for $9.58 $9.38 with free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise, shipping costs $6.83.) That's the lowest total price we could find by $5, outside of the deal below. It features color-coded coins and credit cards.

A close price: Walmart offers it for $9.86 via pickup.