Thanks for everyone's replies. I have dozens of old pullies that came with the homestead or from my historical homestead in Appalachia, and I have used some frequently. I am afraid to use them for heavy loads as they have some sentimental and historical value, and it is hard to tell what their load rating is. I have many heavy duty cables, chains and straps that are rated up to 20 tons as well.
Again, I am limited to what I can get shipped to me by Amazon. I don't want to spend 8 hours drive time to get to a store and be disappointed by what I find or don't find, or to get stuck on the road by an avalanche as it is winter. The below snatch block and comealong looks like it addresses some of the issues in the comments to include the added value of the snatch block, the longer pull and the need to focus on good quality.
And this 12 ton snatch block by Warn that I am leaning towards. I can't tell if its American made, but I have always had good luck from my warn products.
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I do think I will need to spend more than I originally wanted for a good comealong.
This one is US made, by Amsteel rated at three tons and has a 35 foot pull, and a three ton rating. Overkill for some of my project needs, but I it is only 24 pounds so I am sure I will have little difficulty humping this up the mountain for some of the projects I have in mind. Double line pulling capacity is 6,000 pounds dead lift and 12,000 drag/pull. Single rope capacity is 3,000 lbs dead lift and 6,000 drag/pull. It does have pully with it, but the Warn can accommodate a larger cable, which might come in handy.
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These two together are about $560.
Thoughts on these? I am still reading the fine print.
Not sure why Amazon didn't list these manufacturers on the left menu. Actually had to type the manufacturers name in for them to pull up. All Chinese crap listed in the left hand selection.