1) Check her TER reviews.  They will always have a price.  As a newbie you should not be seeing unreviewed gals anyway. Whatever you do, don't ask her directly.  She will fear you're LE and break off all contact.  If you have VIP you can also PM the last reviewer to see her to check if her rate is the same as posted  in the review.  Reviews on other sites don't always have prices but you can usually PM guys who have reviewed her or post a question on a local board and someone will let you know.
2) I don't really follow your other question and the whole thing about what college she goes to.  Girls set their rates in a varierty of ways.  Their rationale is none of our business.  You either pay the rate or don't see her.  Negotiating a rate is a no-no.  The only time it's appropriate to bring up her rate, IMO, is if you've already seen her and she contacts you again when she's coming back to town to see if you're interested.  At that point you could reply, "I'm sorry, but my budget won't permit seeing you right now."  If she replies that she's willing to see you at a discounted rate, that's OK.

if you see a provider that you wanna see on say EROS , and she doesnt list her rate , feel free to ask her, I've NEVER had a gal not tell me . Afterall how much money would you be expected to bring to the date?