if nothing else, go to a general practitioner and have them look at all the shit on your skin. in a mayo country theyll likely be pretty practiced at telling whether any of them need a dermatologists eye or whether theyre just the weird skin shit everyone has. there might also be free skin-check clinics around you. and getting a small surface lesion that hasnt invaded deeply cut off will not be cheap but wont be lifetime-of-debt territory

and if it is something more serious, there are clinical trials running all the time, and a lot of them are in practice more like access programs for established treatments (but with something new thrown on top) than they are guinea pig shit (theyre the sort of thing pretty much everyone with bad cancer should consider regardless of money)