Welcome to SRP grover. You have gotten some good suggestions about purchasing your first straight razor. eBay will be there and full of various razors for a long time. As you gain some comfort and experience with straight shaving you will find you have a much better understanding of what to look for exactly on eBay. Square or round point is up to you. Read and learn all you can here and decide for yourself on a certain tip. All straight razors require absolute focus when a blade is on your face and a square point can be a bit more intimidating starting out. Let us know how all this goes for you. We will be glad to help.
Bob