You have three options
Option A:
Step 1) buy the collectors box on fangamer (PC/Mac/Linux) for $40 or limited run games (PS4/Switch) for $65
Step 2) meet up with Ron in Seattle or at a gaming convention and ask him to sign it
(Alternative: forge the signature using any of the $2000 ebay objects as reference photograph)
Option B:
step 1): travel back in time to November 18, 2014
Step 2) back the kickstarter at the box tier for $150
Option C:
Step 1) head over to eBay
Step 2) be prepared to pay way too much
See also this thread
Whatever you do, don’t put your own legit/forged box on eBay at extortionating prices