Bastens - We are lucky enough to have one of the LEGO City Train Track Splitter 7996 which is now retired. That being said I wouldn't recommend spending over $250 to buy
Ultimate Double Crossover
4DBrix - Train
LEGO MOC Custom Double Crossover Track 7996 by Brick Forge | Rebrickable - Build with LEGO
4DBrix - Train
4DBrix - Train
Lego City Trains Railway Double Crossover Track Points Switch Set 7996 Used
4DBrix - Train
LEGO 7996 Double Crossover Track for RC Trains Set Parts Inventory and Instructions - LEGO Reference Guide
Ultimate Double Crossover
LEGO® Train Double Crossover Track 7996
NEW Lego RC TRAIN 7996 Double Crossover Track Ships World Wide 5702014499041 | eBay
Lego City 7996 Double Crossing - Brand New - Railroad Retired Factory Sealed 5702014499041 | eBay