All switch pedals have the same functionalities (where "sustain" is only one of them). So, $10 switch does the same as $90 switch. Differences are only in quality (and in design). I mean, one doesn't wish pedal would creak on pressing, or that cable would become loose after a while (just for example).
That is, for home use, you can expect good enough pedal for ~$15 (FC5 would be in that category). I mean, I really wouldn't look after even cheaper.
Bogdan