What, if I may ask, are the current going rates for the following razors?

I understand that to truly answer this question, condition must come into play. As I do not yet have the razors in hand, let's assume "good." I can surmise this much at least from the photo I was provided. The razors are as follows:

Gillette Superspeed Red Tip
Gillette Slim Adjustable
Gillette Superspeed Black Handle
Gillette Superspeed Flare Tip
Gillette Ball End Tech (I think... what else came in a ball end?)

Thanks in advance, gents. I greatly appreciate it.

If you happen upon a lot with all of those you could probably pick it up for 30-50, uncased.

Singly, probably more like, in order:
15-20
25-35
10-15
10-20
10-15