You don't know what you want. There's no cheap one letter domain worth anything that would be cheap (I have used cheap before).I wanted to get a 1-letter Guyana (.gy) domain but it was around $700/year which is outrageous.
How can I avoid paying so much for that TLD?
If it's not possible, what cheaper 1-letter domain TLDs are there?
I'd appreciate any advice!