Boy do they. I have purchased about a dozen games and the Starfield controller using 'free money' just this year.
Daddy bigbucks indeed.
Scroll down and they have a 'game' to pick the item which costs the least our of 3/4 and for each correct one you get 10 pts, you can max it for 100 pts daily (3000 pts a month)
You can do it the "proper" way and open the product pages and choose the one with the lowest price, or just use one of the many scripts people have made to automate the process.
At least one thing wrong is that the conversion won't go away with Gold changes to Core, you can convert console or PC GPU's as well for the same conversion ratio.