SkincareRX used to have a subscription bag and I did get a travel size cleanser last year and a sunscreen another time.
They just sent me a letter w my last order saying they were not doing their Beauty Cache program for now....or any more <hope they change their mind>....
SkincareRX might sell travel sizes of those items I think.
Maybe try and contact Obagi themselves?
I've gotten a lot of samples before from companies I emailed, so always worth a try.