Alright im back with a new track>buying blunderbusses 101
First thing's first, pretty much all black powder blunderbusses on the market are made in india, you may be able to find 1 or 2 made by Pedersoli in Italy, but they are rare and expensive and mostly meant for shooting blank salutes.
Indian black powder guns in general work alright, some people refer to them as "99% kits" meaning that you may
have to switch out a spring or a different part to make it fully functional. Some people claim they are unsafe, but I've been able to find only a single report of an indian-made musket blowing up and it was due to user error, by using around 3-5 times more powder than the maximum allowed load and I read the 3 different researches on the specific case and all of them noted a very weird pattern regarding the powder residues, so who knows, maybe not pure black powder was used.
More about the quality of em, they are made alright, but it's made in india, so don't expect too much, outside will be more or less good but once you unscew the lockplate you'll see how unfinished it looks on the inside, dont expect "luxury".
tl;dr indian blunderbusses work good and are safe, just look out if they are in functional order off-the-shelf so it's best to buy them when you can actually hold them in your hands and see it live.
I have bought an Italian made rifled musket since I started this thread and I will post pics at some point. The bore had some surface rust but a little bit of WD-40 fixed it up.
Anyhow, I hope ya will enjoy entering the world of black powder shootin' fella!