Вот такую конструкцию можно сделать меньше?
if (document.getElementById('standart').checked) {sum2 += 0;}
else if (document.getElementById('splen').checked) {
if (document.getElementById('100').checked) {sum2 += 150;}
if (document.getElementById('200').checked) {sum2 += 250;}
if (document.getElementById('300').checked) {sum2 += 350;}
if (document.getElementById('400').checked) {sum2 += 450;}
if (document.getElementById('500').checked) {sum2 += 550;}
if (document.getElementById('600').checked) {sum2 += 650;}
if (document.getElementById('700').checked) {sum2 += 750;}
if (document.getElementById('800').checked) {sum2 += 850;}
if (document.getElementById('900').checked) {sum2 += 950;}
if (document.getElementById('1000').checked) {sum2 += 1050;}
}
else if (document.getElementById('designer').checked) {
if (document.getElementById('100').checked) {sum2 += 75;}
if (document.getElementById('200').checked) {sum2 += 125;}
if (document.getElementById('300').checked) {sum2 += 235;}
if (document.getElementById('400').checked) {sum2 += 458;}
if (document.getElementById('500').checked) {sum2 += 569;}
if (document.getElementById('600').checked) {sum2 += 652;}
if (document.getElementById('700').checked) {sum2 += 758;}
if (document.getElementById('800').checked) {sum2 += 863;}
if (document.getElementById('900').checked) {sum2 += 912;}
if (document.getElementById('1000').checked) {sum2 += 1087;}
}
else if (document.getElementById('cover').checked) {
if (document.getElementById('100').checked) {sum2 += 12;}
if (document.getElementById('200').checked) {sum2 += 28;}
if (document.getElementById('300').checked) {sum2 += 34;}
if (document.getElementById('400').checked) {sum2 += 47;}
if (document.getElementById('500').checked) {sum2 += 59;}
if (document.getElementById('600').checked) {sum2 += 65;}
if (document.getElementById('700').checked) {sum2 += 72;}
if (document.getElementById('800').checked) {sum2 += 88;}
if (document.getElementById('900').checked) {sum2 += 93;}
if (document.getElementById('1000').checked) {sum2 += 114;}
}