are these worth getting for a first timer on a budget PH and EC tester

hello any advice on these or others in their price range would be appreciated, http://www.ebay.co.uk/itm/SET-S-cm-EC-Conductivity-Tester-PH-Meter-Hydroponics-Genuine-UK-Seller-/390143032478?pt=UK_Baby_Baby_Feeding_Bottle_Warmers_Coolers_LE&hash=item5ad6563c9e

thanks in advance