Yes it's absolutely completely reasonable.
I use it always for a long distance trip or asalternative to Address proof and photo of cash.
You would be surprised how many disappear at these options
It's a red flag to me if they won't supply deposit or address proof.
I only ask for 10 or 20 pounds via voucher usually, or 50 if they prefer bank transfer.
I am less strict with amounts as i am outcall only.
If i had a cosy Incall i would be far more demanding to venture out 😂
Also, there are certain long-term clients i take full fee immediate payment, as the likelihood of them cancelling is probably 80% otherwise..
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