I just gave $63.00 for one the other day.
The rifle might be in the 100-1000 USD and up range depending on specifics
You really need to get it appraised by an expert. Value will vary dependent on condition, whether or not all parts are matched or not, original finish or refinish, whether or not it's been sporterised, what accessories come with it, etc.
How much does an 1899 German made Mauser 6.5x55mm worth? Or how much would one cost to buy??
10000.00
$75
50-500 USD
1k and up depending on specifics
Depends on whether this is a pistol or a rifle - Mauser designed and produced many guns. Also, what condition it's in.
Bayonet; 10-50 USD
$150 to $250
50-200 USD or so
Not possible to answer. Depends on exact model and condition- anywhere from $1 to $1000