I have £200 worth of unwanted official Eurostar vouchers.
They come in four £50 paper vouchers and can be used to book any Eurostar ticket. You can only used them to book your tickets or buy items in the Eurostar shops, but they can't be used for booking hotels. Tickets can be booked with them on the phone via their dedicated booking line or in person at their ticket offices, but not online. They don't have an expiry date (checked with them on the phone).
I would like to have £170 for the £200 worth of voucher.
I didn't realize the rules about dealing via PM, so please ignore that!