I am going to try to rank a very competitive keyword. the 2 top sites are pr5 How many high pr domains would I need in my network? I will assume 50 domains are needed. Is my calculation right? 50*$30/domain = 1500 per year for every 3 domains I will get one hosting account. a hosting account will probably cost $50/year 17*50 = 850 total of $2350? damn that's a lot of money. is 50 domains even enough for my purpose?