Dream On Me, Classic 3 in 1 Convertible Crib – Link 
Amazon has this currently marked down to its lowest ever at only $71.12 w/ free shipping.
Free returns.
- Converts to toddler day bed. Toddler rail (DOM#692) Sold separately
- Multi functional, stationary (non drop side) rail design
- Dual hooded, safety locking wheels
- 3 level mattress support
- Standard size Dream On Me mattress, sold separately