My FC4, FC5 and FC7 - 'hammered' in concert and teaching for well over 15 years and all still working perfectly.
'Clone' footswitches and volume pedals (various makes including M-Audio and Bespeco) that I had before them - none lasted more than a year, except for one Proel footswitch (metal, not plastic).
So I agree with Joe H, you do get what you pay for - and you can find FC7s on ebay for reasonable amounts. One of my students just got one - it's a little scruffy but works perfectly. Who actually looks at a pedal anyway!