What's the damage? (to the purse like)

I made a note of the cost of the conversion and have chucked in a couple of links from where the materials came from:

• 9mm Plywood 3 x 117cm x 58.3cm (Arnold Laver) £25.44
• 2x piano hinges (Shaws Ironmongers Sheffield) £10.80
• 4 x Samla Ikea under bed boxes (Ikea) £26
• 2" Reflex Foam 175cm x 117cm (Foam Shop) £53
• 2 x Decathlon camping sleeping mat (Decathlon) £33.98
• Radiator reflective foil (B&Q) £13.98
• 20mm Round button suction cups (Amazon) £2.67
• Andes Bayo Driveaway Awning (Andes) £109.95

Total cost of conversion £275.82


I think I saved myself about £1700 there... how did you get on?