There was an article in
www.thisismoney.com a while ago saying this:
Aviation analysts at Merrill Lynch say Boeing was so desperate to win the contract that Ryanair may have nailed the Seattle-based manufacturer for discounts of up to two thirds. This means Ryanair is paying just $20m (£14m) for each 189-seat next-generation 737-800 priced in the Boeing catalogue at more than $60m.