Always free versus time-limited trials

<div class="compare-demo"><div class="compare-title"><b class="compare-badge">VS</b>ALWAYS FREE VS 12-MONTH TRIAL</div><div class="compare-input"><label>Account month <b id="first-value"></b><input id="first" type="range" min="1" max="18" step="1" value="13"></label><label>Runtime <b id="second-value"></b><input id="second" type="range" min="0" max="730" step="73" value="730"></label></div><div class="cost-rows"><div class="cost-row"><span>Oracle A1*</span><div class="cost-track"><i id="cost-bar-0"></i></div><strong id="cost-value-0"></strong></div><div class="cost-row"><span>Google e2-micro*</span><div class="cost-track"><i id="cost-bar-1"></i></div><strong id="cost-value-1"></strong></div><div class="cost-row"><span>Azure B1s trial*</span><div class="cost-track"><i id="cost-bar-2"></i></div><strong id="cost-value-2"></strong></div><div class="cost-row"><span>DigitalOcean Basic</span><div class="cost-track"><i id="cost-bar-3"></i></div><strong id="cost-value-3"></strong></div></div><div class="compare-foot">2026-10-06 · *eligible region/account/capacity · disk/IP/egress extra</div></div>

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const first=document.getElementById('first');const second=document.getElementById('second');let manual=false;function bar(index,cost,max){document.getElementById('cost-value-'+index).textContent='$'+cost.toFixed(2);document.getElementById('cost-bar-'+index).style.width=(cost===0?0:Math.max(5,cost/max*100))+'%'}function paint(){const a=Number(first.value),b=Number(second.value);document.getElementById('first-value').textContent=a+' ';document.getElementById('second-value').textContent=b+' h';const costs=[0,0,a<=12?0:b*.0104,Math.min(b*.00595,4)];const scale=Math.max(1,...costs);costs.forEach((cost,index)=>bar(index,cost,scale));}paint();let direction=1;setInterval(()=>{if(manual)return;const next=Number(first.value)+1*direction;if(next>18||next<1){direction*=-1;return}first.value=String(next);paint()},800);for(const input of [first,second])input.addEventListener('input',()=>{manual=true;paint()});