I have a cot stood at the top of my stairs, 4 sides and a base!
I had to rob a few of the bolts for the cot I am using for my little lad now, bit it is prefectly servicable! Buy the bits and a mattress, and you are saving the 50 quid it cost new! It has a dropside too!
It is pine ( I think, looks like it anyway!) I cant see this go down the tip... so if you want it, let me know when you can pick it up!