I don't think they are 50-80 diamonds at all. There is not a single person who will sell for below 70. New prices are 70-85 in my opinion

 

Yeah I agree that you won't find one lower than 70 but it's quite hard to find one even around 80

 

If anyone is still selling a beacon I'll be paying around 80 diamonds, so feel free to reply to this thread or message me ingame thanks SquidXI (/Nick =Squidiculous)