X-cart expert to enter data from OSCMAX, OSCOMMERCE

We need product, customers, pictures regular, and thumbnail entered in our new x-cart. Tedious but needs to be done. The hurdle will be the fact we have about 12 customer membership levels, each may have a different price per item. We have about 600 items x 12 groups would ean approximately 7200 prices needing to be entered. We have had someone try to make a csv upload but so far has not been finished. If you cannot put a script together within 1 day, then we want it manually entered which may take 3 to 5 days, our estimate. We want a professional that will commit to working on this project, and commit to getting it done in a timely manner. No excuses! If we find you are professional we may use you for future projects.