Yes, there are several sources on the intermet where you can find barrels. Japanese barrels are more recent, but even so, original Belgium barrels can be found at places like Gunbroker.com and Midwest supply.
Impossible to answer without knowing what model.
Yes, in the new A5.
If the repairs cost more than the car is worth, buy a new one.
Barrelexchange.com
The 70V prefix dates your browning auto-5 mag.to the year 1970.
800-1000 usd
500-700 usd
You can apply for a new auto loan through your personal bank or the dealership that you buy your car through.
60;100-500 uSD
A Browning Standardweight Auto-5 20 guage books at $495 (100% condition) to $240 (60%) for the plain barrel model; $650 to $275 for the Matted rib (solid); and $795 to $375 for the vent rib version. Add 10% for a rounded pistol grip knob on the stock. Add 20% for new in box condition. Examine all Auto-5's for forearm cracks (a generic problem from barrel recoil). Make sure the barrel address is correct for the model year (1962 should read "Morgan, Utah and Montreal, P.Q.). Answer: Above comment incorrect for Barrel in 1962. All Browning auto barrels from 1959-1968 will say: BROWNING ARMS COMPANY ST LOUIS Mo & MONTREAL P.Q. Auto5man
100-500 USD depending on condition.
Capital One Auto provides home loans, new and used car loans as well as auto refinancing.They can also help you purchase a new car through the auto buy program.