Then I’d say I have a bad luck on adobe end and I fail to notice it in time. It is almost two years after I notice the price change and check my bank statement.Easy solution. Move to a country where they don't have sales tax.
Of course, it'll probably have no infrastructure either.
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Something doesn't seem right with this story. I don't mean that you're lying, but either you signed up for something other than you thought you signed up for or something really screwy happened on Adobe's end that triggered escalating pricing changes. Errors do happen and companies do screw up on the back end sometimes.
I've had a Creative Cloud membership for years and they've never adjusted the price on me ever. I even talked them down to giving me $29/month intro pricing for several years and they honored it.