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Might be hard to get that recent once settled for under 50%, but I'd start by offering $90 for the older one (33%). But remember, if you have the money, its probably worth it to pay more than you really want to in order to get the delete.
It all depends if the agency ows the debt, or is just collecting on behalf of the creditor. If they do not own it, you'll have to pay 100% most likely. Otherwise, 40% is what you should expect them to take and if youre very lucky 50%. They will not delete for less than that in most cases.