A FYI that Amazon Prime UK have an unexpectedly large number of spaghetti westerns on their database. It’s difficult to find out how many since their search engine isn’t very good.
A number of them, maybe 30-40, are free (at least to me). General on the low quality end of the genre. There are at least 4 Fidani movies on this (even though none of his movies had been released in the UK) and several movies under strange titles which are different from their on-screen titles so for example they have a Richard Harrison film called Roko’s Revenge which turns out to be Vengeance (1968) and the print has the Vengeance title.
Worth a look if you have this.