The 75 is an inexpensive plane - you can find them on eBay for maybe $15. I had one and sold it. I just didn't use it - it was too small. It cannot be used as a chisel plane unless you grind off the front. You sometimes see them that way since the plane is so inexpensive people don't mind doing that.
Overall, I'd not recommend purchasing a 75. Think about what work you want to do and make your purchase decision based on that.
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