Beginning in January 2019, world golf #1 (right now) is switching from Taylormade irons and wedges to Honma. At this point, it looks like his contract will allow him to play any type of woods and driver which likely means he will stick with Taylormade, but who knows. We are also uncertain of the type of ball Rose will be required to play. Both Honma and Taylormade make golf balls for PGA Tour pros.
If you were wondering, some Honma irons have gone for as much as $75,000. You can go on eBay and find a set of Honma irons for as little as $275 and as much as $50,000. Not bad.