They would range from two to three inches tall/long, made with sculpey, and painted with acrylics.
Price - Between $5 and $10 depending on complexity. (This does not include shipping costs, include your zip code so I can calculate shipping)
I will also do little keychains for $3-$5 but ask me first if I can do the Pokemon you want, cause I may not, unless I can figure a way to chibify/simplify it
Keychain example:
If you may be interested in something bigger and more complex, prices should still not exceed $25 unless its utter madness, can see my gallery for examples -
http://theunknownsoul.deviantart.com/ If you have any questions please ask!