Wendy 2007 bio booster??

[tt-cro]

Hey guys,i decided to boost my supper 999t because i feel lack of power sometimes.So i was looking for some boosters on ebay and found this one.100 ml for only 10$.Now,i know best boosters are dianchi and haifu but they are way too expensive,so did anyone tried this one.And last question,how much booster is enough to tune 2 or 3 rubbers??

cheers

http://www.ebay.com.au/itm/WENDY-SPORT-TABLE-TENNIS-BIO-BOOSTER-100ml-NEW-/131221773811