Why not just buy them online?
Online would be MORE STUPID! (than he already seems to be)
'If' you buy online, there is surely more of a record of purchase and how it was paid - ie credit card, etc. - and a delivery address??? Nah.....that is tooooo stupid even for DS.
JMO - My guess would be that indeed he didn't want to be recognized locally purchasing, and took a chance on purchasing late at night/early morning when the store was less crowded - and did it en route to MI hoping that it wouldn't be noticed or discovered. Because as someone said earlier, I'm sure he knew he'd be one of the first people looked at, so he arranged his alibi, and bought the 'kill kit' out of state, hoping it wouldn't be discovered. He's sooo dumb. :waitasec: