I am assuming it is U$50/U$150 via PayPal. Here is the message I received from LiveAtc.net today:
"To obtain the recording(s) please send $50 USD (if for personal use) and $150 USD (if for commercial/legal/regulatory use) to "archives@liveatc.net" via PayPal. Once the fee is paid we will send you the recording(s) via email or URL"