$ in MJML template

dollar.mjml

<!--
#f0f0f0 / Light gray (margin color)
#d9d9d9 / Medium gray
#455660 / Dark gray (elements)
#88cc00 / Bright green (highlight color)
#333333 / Charcoal (text color)
#41bdeb / Turquoise (link color)
#ffffff / White (background color)
-->
<mjml>
  <mj-head>
    <!-- Title -->
    <mj-title>
      Auto-Renew for tyler_leaddyno (Tech Rocket)
    </mj-title>

    <!-- Custom Font -->
    <mj-font name="Lato" href="https://fonts.googleapis.com/css?family=Lato"/>

    <mj-attributes>

      <!-- Styles -->
      <mj-class name="body-cta" color="white" background-color="#41bdeb" inner-padding="10 15"/>
      <mj-class name="body-img" padding="0" />
      <mj-class name="body-title" color="#999999" font-size="22" line-height="22" font-weight="bold" padding="15 0"/>
      <mj-class name="header-contact" color="#ffffff" font-size="14" line-height="20" padding="30 20 0" />
      <mj-class name="header-title" color="#ffffff" font-size="19" font-weight="bold" line-height="18" padding="0" />
      <mj-class name="footer" color="#999999" font-size="14" line-height="25" padding="10 20 50 10"/>
      <mj-class name="footer-divider" border-width="1px" border-style="solid" border-color="#efefef" padding="15 30"/>
      <mj-all color="#333333" font-family="Lato, Arial, sans-serif" font-size="15"/>

    </mj-attributes>

  </mj-head>
  <mj-body background-color="#f0f0f0">
    <mj-container background-color="#f0f0f0">

      <!-- Branding -->
      <mj-section background-color="#455660">
        <mj-column padding="20">
          <mj-image src="../images/techrocket.png" align="left" alt="Tech Rocket" width="240"/>
        </mj-column>
        <mj-column padding="20" vertical-align="middle">
          <mj-text mj-class="header-contact" align="right">
            1-844-662-RCKT (7258)
            <br/>
            <a href="mailto:[email protected]" style="color:#88cc00;">[email protected]</a>
          </mj-text>
        </mj-column>
      </mj-section>


      <!-- Body -->
      <mj-section background-color="#ffffff">
        <mj-column>
          <mj-text align="center" mj-class="body-title">
            Auto-Renew Payment Confirmation from Tech Rocket
          </mj-text>
          <mj-text mj-class="body-text">
            <p>Dear Tech Rocketeer,</p>
            <p>In order to renew your monthly membership for <b>tyler_leaddyno</b> through 04/02/2015, we charged <b>&#36;29.00</b> to your credit card ending in 0005.</p>
            <p>If you have questions or concerns, please DO NOT reply to this message. Instead, please contact us at <a href="mailto:[email protected]" style="color:#88cc00">[email protected]</a> or call us at 1-844-662-RCKT (7258).</p>
            <p>Thank you,</p>
            <p><b>Tech Rocket</b><br/>
              Online Learning</p>
          </mj-text>
          <mj-button href="https://techrocket.com/account/billing" mj-class="body-cta">
            Manage billing settings
          </mj-button>
        </mj-column>
      </mj-section>

      <!-- Footer -->

      <mj-section background-color="#ffffff" padding="0">
        <mj-column>
          <mj-divider mj-class="footer-divider"/>
        </mj-column>
      </mj-section>
      <mj-section background-color="#ffffff">
        <mj-column width="33.3333%">
          <mj-section>
            <mj-column>
              <mj-image padding="0" href="https://www.youtube.com/user/techrocketlearning" src="../images/youtube.png" title="Tech Rocket on YouTube" width="32" height="32">
            </mj-column>
            <mj-column>
              <mj-image padding="0" href="https://www.facebook.com/techrocketlearning" src="../images/facebook.png" title="Tech Rocket on Facebook" width="32" height="32">
            </mj-column>
            <mj-column>
              <mj-image padding="0" href="https://twitter.com/TechRocket" src="../images/twitter.png" title="Tech Rocket on Twitter" width="32" height="32">
            </mj-column>
          <mj-section>
        </mj-column>
        <mj-column width="66.6666%">
          <mj-text align="right" mj-class="footer">
            910&nbsp;E.&nbsp;Hamilton&nbsp;Ave, Ste.&nbsp;300, Campbell,&nbsp;CA&nbsp;95008<br/>
            Toll&nbsp;Free: 1-844-662-RCKT&nbsp;(7258)<br/>
            <a href="mailto:[email protected]" style="color:#41bdeb">[email protected]</a>&nbsp;|&nbsp;<a href="https://techrocket.com" style="color:#41bdeb">TechRocket.com</a>
          </mj-text>
        </mj-column>
      </mj-section>
    <mj-container>
  </mj-body>
</mjml>