Escaping comma in select options

In members.html I've added a dropdown to select annual turnover and I've used \ to escape the commas in the amounts. This works as expected in the frontend version of the registration form but when editing a member in the admin the following results.

<perch:members type="select" id="turnover" label="Annual turnover" options="Less than £49\,999 per year,£50\,000 - £99\,999 per year,£100\,000 - £249\,999 per year, £250\,000 - £499\,999 per year,£500\,000 - £999\,999 per year, £1\,000\,000 or more per year" listing="false" order="33"/>

Results in

<select id="perch_turnover" name="perch_turnover" class="">
  <option value="Less than £49\">Less than £49\</option>
  <option value="999 per year">999 per year</option>
  <option value="£50\">£50\</option>
  <option value="000 - £99\">000 - £99\</option>
  <option value="999 per year">999 per year</option>
  <option value="£100\">£100\</option>
  <option value="000 - £249\">000 - £249\</option>
  <option value="999 per year">999 per year</option>
  <option value="£250\">£250\</option>
  <option value="000 - £499\">000 - £499\</option>
  <option value="999 per year">999 per year</option>
  <option value="£500\">£500\</option>
  <option value="000 - £999\">000 - £999\</option>
  <option value="999 per year">999 per year</option>
  <option value="£1\">£1\</option>
  <option value="000\">000\</option>
  <option value="000 or more per year">000 or more per year</option>
</select>

Also having the same problem with select control as with radio buttons, in making the selections in the front-end registration form reflect the choice made in the admin member editing page.