I know it was in short supply at the end of last year.
I got my first Shingrix dose on 09/26/18. When I went back to the same pharmacy at the end of December they told me they had none in stock and didn't know when they would be receiving their next shipment.
After the new year I called three other pharmacies before I found one that had it in stock. Needless to say, I went the same day to get my second dose.
Yes, I had the chickpox back in the 50's.
Yes, I got the original shingles vaccine back in August 2015.
Btw, my regular pharmacy told me they would put me on the waitlist, but that didn't stop me from looking elsewhere.
~Boomer~