I've had two Hart razors - a 6/8" and a 7/8". They were both good razors.

However, for me, they were not worth the price. I didn't particularly like the weight and design, and so I passed them on to new owners.

I have to point out here that there was nothing wrong with them. They were elegant, simple razors, and the did shave fine. I prefer full-hollow ground razors, and the Harts did not fit that description, so they didn't suit me.

However, even when considering 1/4" hollow - to wedge grind razors, there are better, more economical options. For a long time Brian Brown made better, more interesting razors for about the same price. I'd have gone that route over a Hart (and I did).

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So, as far as I'm concerned, the Harts are not worth the price. You (and others) may have a different experience and opinion. I'd rather spend a lot less money on a vintage razor, and I'll enjoy the shave a lot more than with the Hart. But this is a personal choice. YMMV.