I decided to gamble on getting this set from Amazon since it's a fraction of the price. Doesn't include the telephoto lens, but most of the complaints about the set were regarding the magnetic ring, which shouldn't be required for the Nexus 5 so if it works out, it'll be $8 well spent.
(There's actually even cheaper options, but I opted for something shipped from the US via Prime so I can deal directly with Amazon if there's any issues)