Hey guys i need your help. In 1998 (maybe 1999) when episode one came out my dad took me to target and i saw this prebuilt Lego R2-D2 in a glass case with a sign saying guess the number of legos and you win. well i put in my guess and i got a call 2 months later saying come pick up your r2d2! i think it was like 752 blocks i dont remember exactly but ive had it collecting dust on my shelf for years now and i have gotten some offers but i have no idea what its worth. Any ideas? i contacted lego and you can only get this one by winning the contest it was never offered for sale.