While I don't plan on selling, I am curious as to the worth of the medications I have. I have 100mg pills of Provigil, 20mg pills of Ritalin, and some Adderall (unsure of dosage -- they're kicking around somewhere). I live in New England.

Ahh, you aint gona get much for them..
If your still in high school, find some kids who only smoke weed and thinks its cool, ask them if they want some pills, sell for $1-$2 each.
don't try to sell to experienced drug users, cause they wont even bother.

the only way your gonna unload ritalin is by paying someone to take them.

10mg adderall -- $2-5

Try to sell the ritalin and adderall to college kids, they pay out the as for it.

i would pay 1-3$ per provogil pill
2-5 for adderall even the 10mg ones (i would pay 20$ for 25mgs of adderall during a needy time) Colledge kids are your best bet.

personally, nothing for the Ritalin, it takes about a week or two for your body to adjust to the side effects....unless its not the time release Ritalin, and you can snort it. (doesn't exist)

speaking from experiences during the finals....

wait until finals week and make people pay through the nose.