Ebay Sales Consultant

We are looking to hire a consultant, on an hourly basis, who is familiar with Ebay sales to help increase our revenue and decrease our fees for our used auto parts Ebay store. We have approximately 60,000 items listed, 100% feedback rating, and currently sell about 1,000 items per week. We are looking for someone to look at ADVANCED metrics and advise on the implementation of these advanced strategies. We are ideally seeking someone with knowledge of auto parts or familiarity with the used auto part industry. We are also preparing to launch a store on Amazon (can also discuss the possibility of optimizing sales on this platform for a later date).