OK, long story long (sorry, I do that haha)
Some years ago, I bought from a seller here a razor that said "Shave ready". I tried it and well, it wasn't shave ready (or at least I think it wasn't. I compared it to my green Astra blades and also did the hair test and well... not shave ready in my opinion) So I decided to take things in my hands and bought a whetstone. Since I was on a budget, I got my hands on an inexpensive stone with a 10K or 12K grit (I can't remember) and, as you can imagine, all I managed to do was to tickle the razor to the point you could actually hear her giggling.

I tried and tried and tried without success so I decided to stick to my DE and abandon the SR scene. A couple of years later I was on a hardware store and found a norton 1500 sandpaper... I decided to try again and, against all odds, I got much better results. Still not shave ready (at all) but WAY more usable than before. I even managed to fix a dent the blade had... but still, not shave ready.

I recently found an article here teaching how I can hone and make shave ready a razor with a 1500 sandpaper and I found where my errors were so I decided to try again, but then a thought hit me: what if I search on ebay a whetstone. ¿Maybe they're cheaper this time? So I did and found this one:
3000/8000 Kitchen Knife Grit Sharpener Sharpening Water Stone Dual Whetstone | eBay

But... is not what I've seen advertised here on the forums. Also, it's made of Corundum and it says "kitchen knife" so it got me thinking: ¿Do I need a specific brand of 4K/8K stone or does any 4K/8K stone works the same?

The reason I want to sharpen it is because
  1. I want to learn how to do it because noone in my country can do it
  2. The expenses to send it to an expert would be too high for me (Honduras -> USA -> Honduras)
  3. The blade is already collecting dust, it's better if I give it some use eve if it's as practice


So... should I go with the 1500 sand paper route or get the whetstone I linked?