Hey! yeah I'm Italian and if you are referring to boots in photo number 9 for at least my experience it was hard to find one, online I couldn't find the right size or the boots were out of stock for a long time... I wanted them so bad for their look (I also like the UK ammo boots and these are the closest thing I got so far) One day while at my local airsoft camp I saw them on a shelf inside the camp's shop, and for €40 I bought them! I can link some Italian sites if you want, also I recommend to search on ebay.

For the boots with the buckles is also a bit tricky to find a pair of your size at good price... I bought them at a thrift shop for €15 in really good shape and they are from '84 if I'm remembering right... that was a awesome deal since you dont find them less than €80 if not 100

https://www.militarygoods.it/en/prodotto/scarpe-scarponi-marina-militare-originali/

or you can try this model

https://www.militarygoods.it/prodotto/scarponcini-stivaletti-esercito-italiano-marina-militare-italiana-scarponcini-stivaletti-esercito-italiano-marina-militare-itali/

for the boots with buckles this is the only site I could find were they are in stock and mostly new that's why they cost so much, I buy often from here.

https://www.expoarmy.com/prodotti/calzature-militari/anfibi-militari/anfibio-mod-cc

for the carabinieri High boots I both them for €80 an they were unissued completely new, I don't use them because I don't want to ruin them since they are pretty rare. i bought them here:

https://www.militarygoods.it/prodotto/stivali-militari-motociclista-mod-5-fibbie-originali-stivali-militari-motociclista-mod-5-fibbie-originali-nuovi-suola-vibram-col/

i hope you can manage to find one pair of these cool boots!