Some really good deals for high potency manuka honey here saving up to 75% and free shipping above $50.
The MQS rating based on MGO content is pretty much equivalent to UMF rating.
Other notable deals:
2 x 250g MQS 12+ Manuka Honey for $38.95 (Save 67%)
2 x 250g MQS 18+ Manuka Honey Gold Label $89.95 (Save 75%)