Rare Ltd. confirmed via twitter
today that while both games will still be available for purchase separately, the bundle including both Banjo-Kazooie
for a reduced price will no longer be available after August 8th. The bundle is currently available for £11.99/$14.99, but after this Friday that will be the price for each of the games individually.
So if you we're ever interested in picking them up then now is the time to do so!