How to politely give recruiter lower bound

I am occasionally contacted by recruiters from my home country for jobs. I am interested in (eventually) going back there too, earlier if there would be well paid positions. The issue is, I am now probably making 10x what I think they have in mind for these jobs. Is there a polite way to tell them how much I make now, and to not contact me for less than x, but that otherwise I do am interested in offers? I don't want to waste time on interviewing for jobs which are completely out of the range for which I'd go back, but I find that hard to communicate at the beginning of the process.

How do you communicate these constraints politely?

Also, if this is the wrong sub, apologies.

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