Hard Landing is also 79 cents in the US store, for UK customers.
Stephen is working on getting all his other titles reduced in price, but so far his publisher has only managed this one and only in the UK. There are also a few books he has published himself (besides the two dozen traditionally published) in the Kindle store, that are available to all:
the basement $0.99
once bitten $0.99
dreamer's cat $0.99
Private Dancer $3.99
Bangkok Bob and The Missing Mormon $3.99