We can offer you to add custom CSS Code
Instead of a class, we used an attribute
[data-alias="2009-swift-mondial-gt-plus"]
.ba-album-items[data-alias="2009-swift-mondial-gt-plus"]:before {
content: 'Sold';
position: absolute;
right: 10px;
top: 10px;
background: #f00;
padding: 5px;
border-radius: 10px;
color: #fff;
font-weight: bold;
}
Best Regards,
Vyacheslav, Balbooa Support Team