Complex sentence: In many cases the RTV was originally returned to the sellelly occur between the seller and the vendor, in some instances the end consumer will return the product directly to the vendor, sidestepping the seller.
Split into simpler sentences: In many cases the RTV was originally returned to the seller by the end consumer. While RTV transactions usually occur between the seller and the vendor, in some instances the end consumer will return the product directly to the vendor, sidestepping the seller.