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Most of us have a multiple razors. I keep two in a case that I alternate between every day. Cased pairs are two razors in a case. Sometimes two of the same razors and some times two different.
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It would probably take you over your 300 dollar budget. But if your going to stay with 5/8 or 6/8 production razors you could look at a cased pair.

If he is a big proud to be an American guy you can head over to Hart steel. Blades are pretty straight forward big and heavy but lots of scale options.