Last week I won a £30 voucher in a charity raffle for a local hairdresser. I won't use it as even with the discount it would work out £40 more expensive than my normal hairdresser who I'm happy with.
Would it be unreasonable to put it on a Facebook selling site for £25? My mum and best friend won't use it either (due to the same reasons as me). My other option would be to donate it as a raffle prize for a different charity event, but the cash would be very welcome at the moment 
I donated £85 + a hamper to the event so more than the voucher is worth if that makes any difference.