It should be noted, however, that their low level of income may be mitigated in some degree by a lower cost of living (the PPS measure of GDP allows for national but not re gional differences in prices).
Det skal dog bemærkes, at deres lave indkomstniveau i nogen grad kan udlignes af la vere leveomkostninger (KKE af BNP tager højde for nationale, men ikke for regionale prisforskelle).