i try not to buy crap tbh.
i'll even tell you my last 5 fitness related purchases.
Sample of 6 Protein Powders from gonutrition - £4.99 including delivery
Polar FT7 - Heart Rate Monitor - £70 ish including delivery (rrp £100+)
NordicTrack T19.0 - Treadmill (rrp of £1600) - £900 after cashback from restylefitness for the home gym
aasics running shoes for my specific foot strike - £110 (rrp £130)
under armour fitness clothing from m and m direct - can't remember the exact price but it was probably 50-75% off what it sells for on the high street.
im willing to bet £90 all of them are far more beneficial in regards to fitness than a £90 set of scales
if you do not think i am well experienced in terms of fitness equipment please take a look at this
http://forums.overclockers.co.uk/showthread.php?t=18270342