Demo:

Shop By Down Payment

$500 Down $800 Down $1,200 Down $1,200+ Down

Shop By Weekly Payment

HTML:

<div class="filterByPriceWrap row mb-3">
  <div class="shopPayment col-md-6 mb-3 d-flex flex-wrap">
    <h1 class="dcsTitle">Shop By Down Payment</h1>
    <a href="buyherepayhere?clearall=1&downpaymentLow=500&downpaymentHigh=799" class="btn">$500 Down</a>
    <a href="buyherepayhere?clearall=1&downpaymentLow=800&downpaymentHigh=1199" class="btn">$800 Down</a>
    <a href="buyherepayhere?clearall=1&downpaymentLow=1200&downpaymentHigh=1200" class="btn">$1,200 Down</a>
    <a href="buyherepayhere?clearall=1&downpaymentLow=1200&downpaymentHigh=10000" class="btn">$1,200+ Down</a>
  </div>
  <div class="shopPayment col-md-6 mb-3 d-flex flex-wrap">
    <h1 class="dcsTitle">Shop By Weekly Payment</h1>
    <a href="buyherepayhere?clearall=1&PaymentLow=75&PaymentHigh=75" class="btn">$75</a>
    <a href="buyherepayhere?clearall=1&PaymentLow=75&PaymentHigh=95" class="btn">$75 - $95</a>
    <a href="buyherepayhere?clearall=1&PaymentLow=95&PaymentHigh=100" class="btn">$95 - $100</a>
    <a href="buyherepayhere?clearall=1&PaymentLow=100&PaymentHigh=100000" class="btn">$100 or More</a>
  </div>
</div>

SCSS Extend:

.shopPayment {
  h1 {
    flex-basis: 100%;
  }
  a {
    @extend %default-btns;
    flex: 1 48%;
    margin: 2px;
    padding: 1rem 0;
  }
}