Welcome. For prices, there are vendors on this site, plus another is Hypermegasat.com. Yes, Ku band uses smaller dishes (30" - 36") which are easy for one person to handle. Just make sure when buying a dish that you can add a motor to it later, which'll allow you to remotely rotate your dish to several different Ku band satellites. Start out first without a motor and when you get good at aiming and receiving satellites, then add the motor. A Stab 90 is the best in my opinion. A motor is commonly referred to as a H-H (Horizon to Horizon).
First and foremost get a good compass, whether the old-school liquid filled or a digital. You'll need that to find true South, that is your reference point. As for installation, you may want to try different areas of your property for the best results. To minimize damage you can mount your dish temporarily on a wooden pallet loaded down with bricks or stones. Alternatively a pole banged into the ground will work, just make sure it is plumb. Therefore get a level if you don't already have one. I use the type of level that is for putting fence posts in the ground, found cheap at Home Depot, and it has level bubbles at 90 degrees to each other. It has an L shape.
Nice thing about FTA installations is that you can install a dish at ground level in most cases; no need to climb roofs. Do a site survey first and determine what obstructions might be in the way, e.g. homes, trees, high bushes. Also remember that the farther away the dish is from the house, the longer the coax run will be. Coax can be buried, and RG/6 is the type of coax normally used. Another handy item is a kit containing a coax cutter, compression fittings, and compression tool.
Lastly, during heavy rain, your Ku band signal will be affected, this is "rain fade." No need to worry, just wait until it stops and the signal will come back.
You came to the right place for help, satelliteguys is the epicenter of knowledge on this subject. Good luck with your installation.