10 bucks
100-500
Depending on condition, about $350.
100-400 USD or so depending on specifics
300 USD
100-300 or so
A 44 cal (magnum) is an 'original' Vaquero as opposed to the New Vaqueros which are only sold in 45 Colt and 357 Magnum. $400 will get you a decent, 'unimproved' example. It is still possible to find these new. Expect to pay a minimum of $500-575. Strangely, stainless models don't seem to command a higher price than basic blued models.
Depending on EXACTLY what you have and the conditon, it can range from 75-500 USD. ruger .22 cal single six
RUGER PISTOLS ARE GOOD GUNS, ABOUT $600
100-400 or so
About $250-$275
100-1000 pending a detailed description.
200 USD