yes.
No such weapon. You need to see a gunsmith.
No
It depends on several things. Is is new or used, what model is it, and what condition is it in?
100-400 or so
Have it examined by a gunsmith. It can be chambered for either 9mm Luger or .380 ACP
50-800 usd
No, you cannot safely shoot .45 ACP ammunition in a .45 Long Colt firearm. The two cartridges have different dimensions, case lengths, and design specifications, which means they are not interchangeable. Attempting to use .45 ACP in a .45 Long Colt chamber can lead to dangerous malfunctions or damage to the firearm. Always use the correct ammunition specified for your firearm.
NO, NO, NO, NO, !!!!!!!!!!!!!!!!!!!!!!!!! THEY ARE NOT INTERCHANGEABLE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Same thing. Yes.
.38 Super and .38 ACP are not the same ammunition, although they share some similarities. The .38 Super is a higher-pressure round designed to deliver greater velocity and performance, while the .38 ACP is an older cartridge with lower pressure and performance characteristics. Additionally, they have different case dimensions, so they are not interchangeable in firearms. Always ensure you use the correct ammunition specified for your firearm.
S&W never made a 25 ACP handgun for retail sale.
100-600 USD depending on condition, box, accessories, papers, etc..