Having never shot something like this before, I thought I might get some opinion on what to charge.

I have to travel to an engineering shop(40mins) and take some product shots of some mining equipment they make for a catalogue to be distributed throughout the world. One mill is about 5metres long and the other is about 30metres long and this last one may be taken to another location for its portraits.

I have no idea what to charge, after processing the images, I will be just forwarding the hi-res images to the client and they will use them and own them from then on.

Any thoughts on what to charge? A friend who works for the company has got me this gig.

Cheers,
Steve