Looking to purchase a property out in Italy

Hey guys, I’m looking to purchase a property in Italy. I was wondering if anyone can explain to me what would happen to the OHA that I am entitled to. Currently living in the local economy receiving about €1778 OHA and €1583 utilities. I read somewhere online that OHA will still continue based on this formula: purchased price / 120. Which is a little shocking to me because the property I plan to get is €635k / 120 = €5625… the rate I fall in per the calculator is OHA: €1778 + €1583 = €3361… that’s a €2264 difference. I mean I won’t be complaining if I get €5625 monthly so if anyone is willing to clarify, please do so!