I did this because I always wanted that grinch skin. the gun was also really cheap since grinch was the second to last and I had the 80% off coupon at the end (50% off used for grinch). too bad it doesn't count for prestige but it can't be helped. here's the catch with this one:
>you have 2 coupons
>must use the 50% off before you can use the 80% off
>draw is normal priced outside of those coupons