Batsujun is just a standard port from different hardware. It's not a special remake like Super Darius II or Sidearms Before Christ or anything. Lords/Winds for Turbo/PCE is the real game running on the hardware it was designed for. The value of the Saturn version is strictly from collectibilty.
Lords went for $30 for close to 20 years straight. Then, not long ago, collectards collectively declared, "I'm not paying $30 for the Super Mario & Duckhunt of the TurboGrafx-CD, I'll pay no less than $70 and try to hold out for sellers gullible enough to take $150 for the most common CD game!"
Based on recent eBay sale prices, this us what you should expect to pay to buy these games within a reasonable period of time:
Batsujun: $175
Lords of Thunder: $80
Winds of Thunder: $60