Granted i work in a DIY store but at the most it would have cost me £22 without discount.
Anyway, follow the following steps to get a great new desk built and ready to use in no time!!
Step 1: Preperation
I chose to use 90mm (9 cm) wide CLS for the main frame (legs and 1 support). I then chose some 60mm (6cm) CLS timber to use for the supports that will be visible, plus their smaller so won't get in the way!
I then shose to use 18mm thick Plywood to make the desktop. I cut this down into 4 inch strips and intend to leave a small gap between each plank.
YOu'll also need a drill, with drill bits and screwdriver bit, some multipurpose screws (long enough to provide adequate strength) and some wood glue (optional).