Stuck drivers side door

[azelin242@xxxx]

I was offered a DeLorean today, in very good condition cosmeticly and 
mechanicly, but the seller informed me of one problem with the car. 
The drivers side door is locked in the shut position and won't open. 
Is this a common problem? I've heard about the solenoid problems, and 
I thought maybe it was that. Has anyone heard of this kind of thing 
before? Is it easy or hard to fix, and how much would it cost to 
repair?