Try e-gunparts.com
5-115 USD or so
35-100 USD
100-250 or so
50-175 usd
75-200 or so
50-150 usd
Gun shop, gun show, estate sale, garage sale, egunparts.com
Unless you have experience or an exploded parts diagram, don't do it. Go to a gunsmith and have them show you how.
Depending on EXACTLY what you have and the conditon, it can range from 75-500 USD. ruger .22 cal single six
six
Ruger Single Six
There is no such Venn diagram. If six regions look like 7 you are clearly muddling something up.