Buy the finest blades on Amazon. The Feather platinum coated(yellow box) are the best. They have gone up some, but recently bought 200 blades for $80. 200 is a years supply if you change blades frequently every two or three days like I do.
Regarding shave cream there are several good brands out here unrelated to price. For example, Black Jack is decent but it is over $25 a jar. I prefer Geo. Trumper, an old style cream. I like the lime scent. Stay away from the canned foam. Total crap. Some
Buy a decent brush. The best are boars hair, but not critical. Just get one good enough that it does not shed hairs. Even synthetic works OK.
Buy a styptic pencil and perhaps a pack of small band aids. Every once in a while, no matter how good you are, you are going to nick your self. On those rare occasions, at my age I consider it a badge of honor to still shave like a man.
I prefer a 3-pass shave. Your mileage may vary.
Once you start getting in to it you will never go back. You will save a ton on money. You also find it mentally therapeutic. Take the extra time in the morning to contemplate who you are and what you are going to do for the day.
Unless "You" is a liberal. Spending any time looking in a mirror recognizing who and what you are is anything but therapeutic...