i am planning on buying a range extender or repeater can any 1 recommend one that helps boost signal strength that does not exceede 60 dollars ^_- currently for my desktop pc i am showing 4 bars but...

before i start the hardware ver v1 is a guess for what ever reason my internet speeds is crippled from a normal 14mb dl to 1mb if i am lucky and it goes up and down and has random disconnects i have...