Baby Value via eBay offers the Safety 1st Store 'n Go Belt-Positioning Booster Car Seat in five styles (Adventure pictured) for $39.99 with free shipping. That's the lowest total price we could find by $10. It features a storage drawer, cup holder, headrest, and supports children from 40 to 100 lbs.
Walmart offers the Safety 1st Sweet Dreams Baby and Toddler Crib Mattress for $25. Opt for in-store pickup to dodge the $5.99 shipping charge. That's the lowest price we could find by $34. This 5" mattress fits standard cribs and features a hypoallergenic, anti-microbial surface.