Ebay isn't the place for oil cabinets typically to get best money. High end auctions would see this piece fetch $1800+ IMHO.
But lets be practical:
Just the bottles are $600 if you sold them cheap for $50ea, bump them to $75 and you're at $900 and I doubt anyone here would value that cabinet any less than $500-600 if they were selling it. So lets say $1100-1500.