I am looking for a low cost and simple solution to resharpen the dulling edge on my razors. They can still shave but they are pulling to much to be comfortable. I am not going to restore any old blades, just touching up the edge on what I use now. I hope to keep it to one stone and I prefer water over oil. I do plan to buy a new full size strop since all I have now is a paddle.

So my goals are:
1. Low cost if possible ( I know this is subjective but absolutely not over $100 prefer $50ish)
2. Water use instead of oil (Again, keeping it simple)
3. Prefer one stone (Two sided is OK if needed)

It seems Barber Stones would be the way to go but I don't know anything about them really. I was reading some threads so I have an idea. I saw a Pike barber stone on Ebay for around $10.50 (Bidding still going) but I am not sure of grit to get or are they all very similar?

I haven't posted on here in a long time so I have forgotten alot I want to start using my straights again if I can do it without spending a ton.

I think that is it. I look forward to your suggestions.
Thanks
Larry