If I'm a dissident running from the government I probably don't want the attention generated by bringing 10k Euros in cash into a business to buy something.
Government is under no obligation to make it easy for you to overthrow it (which is by definition, a criminal enterprise).
You want to avoid problems? Get involved in local politics, or start a media publication or literally any one of a thousand things you could do right now which is going to be a lot easier then "become an off the grid fugitive dissident".
>"You want to avoid problems? Get involved in local politics, or start a media publication or literally any one of a thousand things you could do right now which is going to be a lot easier then "become an off the grid fugitive dissident"."
It isn't as easy as you are saying. If it was this easy, there would be no issues, no poverty, no refuge etc.
Common bartering trick is that you don't keep all your money in your wallet. Then you pull it out and say "golly gee, I can only afford to pay X", and you can bypass some of the back and forth. Similar technique would let the dissident avoid raising suspicion. Keep a few hundos in their wallet, a thousand in a different pocket, rolled up in their socks, stuffed in a bra, etc etc