Looking for ebay prices for a product I want to sell (not sell very expensive) I have seen something, even bullshit, can be quite useful when searching for something on ebay.
Is NOT the same "120GB" to "120 GB".
This also applies to any number and unit (if we look objectives or lens is not the same "90mm" to "90 mm").
As you see, is bullshit, but remember now looking for the 2 forms and find more matches (more likely to find something cheaper) 
PS: ebay does NOT distinguish between period "." And eat ",". It is the same as saying "3.5" "3.5"
Curious appreciation, I will try to carry it out
Withcurious
With