How to grade common circuit boards

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 any circuit board with heavy attachments , any brown / yellow board , most low grade pcb snaps by hand and is very flimsy , anything that contains copper coils , relays , or motors these if mixed brown / green / yellow board , they are £1 a kg , if mainly brown / yellow £0.65 a kg . 

has to contain one gold corner bga , found in sky boxes , flat panel TVs , dvd players , a lot of small electrical items , clean with no metal attachments these are £3.75 a kg 

found in desktops ( pc tower‘s) to clean remove all plugs , steel ( cpu cover if possible ) and any alloy covering the chips this will get you our maximum price , £5 a kg . 

found in older generation and amd pc towers , please remove all attachments to obtain maximum price , these are £13.50 a kg must be clean . 

comes from server units , must have all attachments and be as pictured to obtain maximum prices £7 a kg . 

This must have no steel on the front / no alloy / plastic attachment , must just be a clean board with gold edge attached, ( £14 a kg ) otherwise a 50 percent deduction on the price applies .