1911s require barrels to be fitted to the slide and the bushing. price can increase pretty quick with adding a threaded barrel. Hence why I’m looking for a specific host, would like a suppressed 1911 but most of the threaded 1911s I see are $800+ woulf like to be around $4-$500
HK45's have a new MSRP and are made in GA now - you could get an HK45 Tactical or the HK45 Compact Tactical in the $700 range. Or a used USP 45 and threaded barrel for probably even less.
But really - the ultimate .45 suppressor host is the Mark 23. There is no comparison. (They're like 1800 last time I checked - worth every penny )