I have used an old school brush and shaving soap in a mug for years. I have a new fangled razor with a broncos logo on the handle that the blades cost $20 for a pack of 4. But with the brush and soap I can make one pack of those razors last 4 or 5 months.
The other trick I read in a magazine (it's like an internet you hold in your hands and use your fingers to turn paper pages), was to dry the blades well when finished so I always wipe them off with my towel. It seems to have helped a little.
But the shave with a brush and soap is far superior to using cream and it doesn't irritate my face hardly at all whereas a shave with cream always tore me up.