thought i would put this in spoilers section in case it was quest related.
So i was walking along near fort sunguard, when two little buys came up to me and said "we found these by the dwemer bridge, do you want them"
but he never gave me anything.
then went on to say "for a price i can tell you where it is"
but no option came up to buy the info off of him?
now ive been through this game about 5-6 times and this is the first time ive seen this happen.
can anyone shed some light on this one?

A random encounter. I've only seen it twice in half a dozen characters.

I had it happen once, near Markarth. I bought the item's from him and "bought" the location also. I didn't have any problem's doing so though.

It happened to me once near Rorikstead,I was able to buy the location from them.
I'm fairly sure it's just a random encounter.