Use the 400 merits to buy CONVERTORS sell those on the black market/auction house, or use them to convert cheap enhancements to the ones you want.
 
	 
 
	I think this is correct (math):
 
		10 merits gets 30 convertors.
	
	
		100 merits gets 300 convertors.
	
	
		300 convertors are worth 300 x 70,000= 21,000,000
	
	 
 
	More efficient could be to buy cheap enhancements and use the convertors to get what you want.
 
	Example: Need a Gaussian's Synchronized Fire-Control? 
 
		Buy a Adjusted Targeting
	
	
		Use a convertor to change the Adjusted Targeting to another Category: ToHit (spot to do this shown in below image as Category: Healing) 
	
	
		Bingo Gaussian's Synchronized Fire-Control (cost 2 convertors)
	
	 
 
	Reference:
 
	https://hcwiki.cityofheroes.dev/wiki/Enhancement_Sets
 
	Convert menu on enhancement tray.