I bought a slightly used wheel (perfect condition!) for $150 including shipping, and a brand new tire (Mich. Cross Terrain) from 1010tires.com for $122 ( $141 including shipping). On the whole I would say the average you should pay is around $300 for both.
A discounted 'new' wheel from hondacuraworld.com is $200. So all in all, the most you should pay is $350 for both.